CN108082474B - Broken-step frame structure of seaplane - Google Patents
Broken-step frame structure of seaplane Download PDFInfo
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- CN108082474B CN108082474B CN201711055211.5A CN201711055211A CN108082474B CN 108082474 B CN108082474 B CN 108082474B CN 201711055211 A CN201711055211 A CN 201711055211A CN 108082474 B CN108082474 B CN 108082474B
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- web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C35/00—Flying-boats; Seaplanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/06—Frames; Stringers; Longerons ; Fuselage sections
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- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Casings For Electric Apparatus (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention provides a seaplane broken step frame structure, which comprises a left half frame structure, a right half frame structure (20, 20') and a connecting assembly (30). The left half frame structure and the right half frame structure (20, 20') are symmetrical about the symmetrical center of the airplane, and each half frame is formed by combining an upper frame (21), a lower frame (22), side edge strip connecting angle bars (23), a web connecting piece (24), a plurality of gaskets (25), a web connecting reinforcing piece (26), a finger-shaped strip plate (27) and an L-shaped broken step angle bar (28); the connecting assembly (30) comprises an inner edge strip connecting angle bar (31), a broken-step edge strip connecting angle box (32), a ship bottom edge strip connecting angle box (33), a web connecting upright post (34), a connecting plate (35) and a V-shaped joint (36). The connecting assembly (30) connects the left and right half frame structures (20, 20') to form a complete broken step frame structure. The step structure adopts a sectional combination design, ensures that the connection of the peripheral structures of the steps is not interfered with each other, has clear force transmission path, improves the assembly manufacturability, reduces the assembly difficulty, and simultaneously meets the water tightness requirement of the step structure.
Description
Technical Field
The invention relates to the field of fuselage structure design, in particular to a seaplane broken step frame structure and an airplane comprising the broken step frame structure.
Background art:
the structural design of the airplane should strive to ensure the structural integrity, and meanwhile, considering the assembly manufacturability, some parts of the airplane body need to be designed in a subsection mode, and the structural design of the parts becomes one of the keys in the whole airplane structure.
Due to the special body appearance of the seaplane, the broken-step frame of the seaplane plays an important role in the seaplane take-off, and is connected with main load-bearing structures such as keel beam sectional connection, broken-step structures, broken-step front and rear wall plates and the like in a staggered mode, so that the structural load transmission is complex, and meanwhile, the broken-step frame also has watertight requirements. The good broken step frame structure design can make the overall structure possess clear biography power route, improves bearing efficiency, satisfies the sealed requirement of aircraft.
The small-sized seaplane has small size and small load, and the broken step frame structure can be designed into an external attached structure or an integral frame structure, so that the maintenance and the repair are relatively simple. However, for the seaplane with a large size, the shapes of the ship bottoms of the seaplane before and after the step breaking are different, the shapes of the wall plates before and after the step breaking cannot be continuous, if an integral structure is adopted, the connection requirement that other structures pass through in a staggered mode is not facilitated, and secondly, the dimension of the rough material is large, the material utilization rate is low, the cost is high, and therefore the step breaking frame is connected in a proper segmented mode, and the good structural manufacturability of the whole structure of the seaplane can be guaranteed.
The invention content is as follows:
the invention provides a seaplane broken step frame structure, which is used for solving the problems of complicated assembly relation, unclear force transmission path and the like caused by connection and staggering of broken step peripheral structures.
The technical scheme provided by the invention is as follows: a seaplane broken frame structure comprises a left half frame structure 20, a right half frame structure 20', a connecting assembly 30, a left half frame 20, a right half frame 20', a connecting assembly 30, a connecting structure 24, a plurality of gaskets 25, a web connecting reinforcing piece 26, a connecting structure 22, a side edge strip connecting angle bar 23, a connecting structure 20 and a connecting structure 20; the connecting assembly 30 comprises an inner edge strip connecting angle bar 31, a broken step edge strip connecting angle box 32, a ship bottom edge strip connecting angle box 33, a web connecting upright post 34 and a connecting plate 35; the upper frame 21 and the lower frame 22 are connected by an overhanging lapping structure 21a, a side edge strip connecting angle bar 23, a web connecting piece 24, a plurality of gaskets 25 and a web connecting reinforcing piece 26. The left and right half frame structures 20,20' are connected by a connecting assembly 30.
Wherein, the left and right half frame structures 20,20' further comprise finger-shaped band plates 27 and L-shaped step angle bars 28 which are sequentially arranged at the lower part of the web connecting piece 24.
Wherein the left and right half-frames 20,20' have a row of square open structures.
Wherein, the upper frame 21 is provided with a plurality of reinforcing ribs.
Wherein, the back of the overhanging lap joint structure 21a of the upper frame 21 is provided with a sunken design, the sunken depth is equal to the thickness of the web plate of the lower frame 22
The degrees are the same.
Wherein, the web connecting piece 24 is of a comb-shaped square opening structure.
Has the advantages that: the invention provides a seaplane broken step frame structure, which adopts a structural form of sectional combination assembly, has high material utilization rate and reduced cost, can ensure that the connection of main structures at the periphery of broken steps is not interfered with each other, meets the requirement of load transfer continuity, is favorable for providing good structural manufacturability and maintainability, and meets the requirements of airplane structural strength and sealing property.
Drawings
For a better understanding of the present invention, the following description is given with reference to the accompanying drawings:
fig. 1 is a schematic view of the present invention assembled with a keel beam at the center of symmetry, with broken half-frames shown distributed on both sides of the keel beam.
FIG. 2 is a diagram of an overall broken-away box structure, in isometric view.
Fig. 3 is an exploded view of the components of fig. 2, more clearly showing the components of the step-out frame.
Fig. 4 is a rear perspective view of the entire stepped frame, with the seal assembly installed and the rear side of the stepped half frame.
Fig. 5 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 4.
Figure 6 is a schematic view of the part assembly stack-up relationship of the right-hand half frame,
FIG. 7 is a detailed view of the positional relationship between the shim and the web connector in the half frame, showing the shim placed at the opening of the strap connector.
Fig. 8 is a side view of the part finger band plate shaft.
Fig. 9 is an axial side view of an L-shaped stepped angle bar.
Description of the drawings:
10: broken frame structure, 20': left and right half frame structure, 30: connecting assembly, 21: upper frame, 22: lower frame, 23: side edge strip connection angle, 24: web connector, 25: a plurality of spacers, 26: web connection stiffener, 27: finger band plate, 28: l-shaped stepped angle bar, 21a: overhanging overlapping structure, 21b: inner edge strip of upper frame 21, 21c: broken-level edge strip, 31: inner edge strip connecting angle bar, 32: broken edge strip connection angle box, 33: corner box, 34 are connected to the ship bottom edge strip: web connecting column, 35: connecting plate, 36: and a V-shaped joint.
δ: the finger band plate 27 is connected with the L-shaped stepped angle 28 and then turned over to form a gap.
A-A: the partial cross-sectional view is indicated.
B: detail of parts are indicated.
The specific implementation mode is as follows:
for a better understanding of the utility and objects of the invention, and not to be considered as limiting solutions, a detailed description of embodiments of the invention is given further below on the basis of the accompanying drawings.
As can be seen from fig. 1, the broken step frame structure 10 is a combined structure which is symmetrical left and right and is distributed on two sides of the keel beam, and comprises left and right half frame structures 20,20' and a connecting assembly 30.
The left and right frame halves 20,20' each comprise an upper frame 21, a lower frame 22, side edge strip connecting angles 23, web connecting members 24, a plurality of spacers 25, web connecting reinforcements 26, finger straps 27, and l-shaped offset angles 28. The upper frame 21 and the lower frame 22 are main bearing structural members, and the upper frame 21 is provided with a plurality of reinforcing ribs and an overhanging lap joint structure 21a. The upper frame 21 and the lower frame 22 are connected by an overhanging lap joint structure 21a, a side edge strip connecting angle bar 23, a web connecting piece 24, a plurality of gaskets 25 and a web connecting reinforcing piece 26. The left and right half frame structures 20,20' are connected by a connecting assembly 30.
In more detail, the upper frame 21 is overlapped on the lower frame 22 by the overhanging overlapping structure 21a, and then its side edge strips are connected by the side edge strip connecting angle bar 23, since the sunken depth of the overhanging overlapping structure 21a of the upper frame 21 is the same as the thickness of the web of the lower frame 22, the upper frame 21 is flush with the back of the web of the lower frame 22 after overlapping.
The web connecting piece 24 with the comb-shaped square opening structure is respectively arranged on the back of the web of the upper frame 21 and the back of the web of the lower frame 22, and one side of the comb-shaped square opening is upwards arranged on the back of the web of the upper frame 21. A plurality of shims 25 are of equal thickness to web link 24 and are correspondingly disposed in the comb-like openings of web link 24 and remain flush with the edges of web link 24. A web joint stiffener 26 is mounted over the plurality of shims 25 and the web joint member 24. The square open structure formed after assembly is distributed along the offset flanges 21c for passage of the offset rear panel stringer.
Further, a finger band plate 27, an L-shaped offset angle 28 are mounted on the web connecting member 24 in turn, connected to the lower frame 22, aligned with the lower side edge of the web connecting member 24. A gap delta exists between the flanges of the connected finger-shaped band plate 27 and the L-shaped broken step angle material 28, and the gap is used for connecting the skin of the broken step rear wall plate, so that the sealing and force transmission requirements of the broken step rear wall plate are ensured.
Particularly, the web plates at the symmetrical centers of the backs of the left and right lower frames 22 are provided with connecting plates 35, one ends of the left and right L-shaped broken step angle members 28 near the symmetrical centers are respectively lapped on the connecting plates 35, and finally, the left and right L-shaped broken step angle members 28 are lapped and connected through V-shaped joints 36.
The inner edge strips 21b of the left and right upper frames 21 are connected by an inner edge strip connecting angle member 31 across the upper edge strips of the keel beams; the webs of the upper frames 21 on the left side and the right side are in clamping connection in a back-to-back mode through web connecting upright posts 34 distributed on two sides of the keel beam web; the left and right broken step edge strips 21c of the upper frames 21 on the two sides are connected left and right through the broken step edge strip connection angle box 32, the vertical edges of the broken step edge strip connection angle box 32 clamp the web plate of the keel beam and are connected through fasteners such as split-height lock bolts, and the other edges of the broken step edge strips are respectively connected with the left and right broken step edge strips 21 c. Similarly, the bottom flanges of the left and right lower frames 22 are connected by the bottom flange connection corner boxes 33.
The invention relates to a broken step frame structure of a seaplane, which splits an integral frame into a sectional combined structure form, reduces the production difficulty of parts, reduces the rejection rate of products, improves the assembly manufacturability of the structure, and can meet the requirements of structure force transmission and water tightness of a broken step region with complicated structural cross-linking.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the invention to the precise embodiments set forth herein. For the engineers skilled in the art to which the invention relates, several simple deductions or substitutions can be made without departing from the concept of the invention, and all should be considered as belonging to the protection scope of the invention.
Claims (6)
1. A seaplane stepped frame structure comprising left and right half frame structures (20, 20') and a connecting assembly (30); wherein the left half frame (20) and the right half frame (20, 20') comprise an upper frame (21), a lower frame (22), side edge strip connecting angle bars (23), a web connecting piece (24), a plurality of gaskets (25), web connecting reinforcing pieces (26), finger-shaped band plates (27) and L-shaped broken step angle bars (28); the connecting assembly (30) comprises an inner edge strip connecting angle bar (31), a broken step edge strip connecting angle box (32), a ship bottom edge strip connecting angle box (33), a web connecting upright post (34), a connecting plate (35) and a V-shaped joint (36); the upper frame (21) is lapped on the lower frame (22) through an overhanging lapping structure (21 a), and then is connected with the side edge strip through a side edge strip connecting angle bar (23); the web connecting piece (24) is of a comb-shaped square opening structure and is respectively arranged on the back of the web of the upper frame (21) and the back of the web of the lower frame (22), and one side of the comb-shaped square opening is upwards arranged on the back of the web of the upper frame (21); a plurality of gaskets (25) are correspondingly arranged in the comb-shaped openings of the web connecting pieces (24) and are kept flush with the edges of the web connecting pieces (24); the web connection reinforcement (26) is arranged above the plurality of gaskets (25) and the web connection piece (24); the finger-shaped band plate (27) and the L-shaped broken step angle bar (28) are sequentially arranged on the web connecting piece (24) and are connected with the lower frame (22) and are aligned with the lower side edge of the web connecting piece (24).
2. The broken bezel structure of claim 1, wherein: a web plate at the symmetrical center of the back of the left lower frame (22) and the right lower frame (22) is provided with a connecting plate (35), one end of the left L-shaped broken step angle bar (28) and one end of the right L-shaped broken step angle bar (28) near the symmetrical center are respectively lapped on the connecting plate (35), and finally, the left L-shaped broken step angle bar and the right L-shaped broken step angle bar (28) are lapped and connected through a V-shaped joint (36); the inner edge strips (21 b) of the left and right upper frames (21) are connected through inner edge strip connecting angle members (31) crossing the upper edge strips of the keel beams.
3. The broken-level frame structure of claim 1, wherein: the webs of the upper frames (21) on the left side and the right side are in clamping connection in a back-to-back mode through web connecting upright columns (34) distributed on the two sides of the web of the keel beam; the left and right broken step edge strips (21 c) of the upper frames (21) on the two sides are connected left and right through broken step edge strip connecting angle boxes (32), the vertical edges of the broken step edge strip connecting angle boxes (32) clamp the web plates of the keel beams and are connected through split high-locking bolt fasteners, and the other edges of the broken step edge strips are connected with the left and right broken step edge strips (21 c) respectively; similarly, the bottom edge strips of the left and right lower frames (22) are connected through the bottom edge strip connecting corner boxes (33).
4. The broken bezel structure of claim 1, wherein: the left and right half frames (20, 20') have a row of square open-cell structures arranged along the broken step edge strips (21 c) of the upper frame (21).
5. The broken bezel structure of claim 1, wherein: the upper frame (21) is provided with a plurality of reinforcing ribs.
6. The broken-level frame structure of claim 1, wherein: the back of the overhanging lapping structure (21 a) of the upper frame (21) is provided with a sunken design, and the sunken depth is the same as the thickness of the web of the lower frame (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055211.5A CN108082474B (en) | 2017-10-31 | 2017-10-31 | Broken-step frame structure of seaplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055211.5A CN108082474B (en) | 2017-10-31 | 2017-10-31 | Broken-step frame structure of seaplane |
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| Publication Number | Publication Date |
|---|---|
| CN108082474A CN108082474A (en) | 2018-05-29 |
| CN108082474B true CN108082474B (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711055211.5A Active CN108082474B (en) | 2017-10-31 | 2017-10-31 | Broken-step frame structure of seaplane |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109720541B (en) * | 2018-11-12 | 2022-11-04 | 中航通飞华南飞机工业有限公司 | Overwater aircraft broken-order force transmission structure and aircraft |
| CN112357046B (en) * | 2020-11-02 | 2022-06-17 | 中国商用飞机有限责任公司 | Keel beam structure for aviation aircraft, construction method of keel beam structure and aviation aircraft |
| CN113911314B (en) * | 2021-11-16 | 2024-04-16 | 中国商用飞机有限责任公司 | Keel beam edge strip connection structure and installation method thereof |
| CN117184404B (en) * | 2023-11-07 | 2024-01-12 | 北京航空航天大学 | High-efficiency reinforced thin-wall tubular beam suitable for ultra-low wing-loaded aircraft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364250B1 (en) * | 1998-09-25 | 2002-04-02 | Daimlerchrysler Aerospace Airbus Gmbh | Shell component for an aircraft fuselage and method of manufacturing the same |
| CN203528820U (en) * | 2012-12-14 | 2014-04-09 | 中航通飞研究院有限公司 | Large-scale fire extinguishing amphibious airplane |
| CN104229121A (en) * | 2013-06-21 | 2014-12-24 | 波音公司 | Symmetric wing rib with center plane fastened shear ties |
| WO2015142171A1 (en) * | 2014-03-17 | 2015-09-24 | Gtm Holding B.V. | Primary structure connecting element for aircraft and method for manufacturing the connecting element |
| CN206437192U (en) * | 2016-12-14 | 2017-08-25 | 中航通飞研究院有限公司 | It is a kind of rimless without beam composite fuselage big opening reinforcing frame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010018932B4 (en) * | 2010-04-30 | 2013-06-13 | Airbus Operations Gmbh | Perimeter stiffening for an aircraft fuselage |
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2017
- 2017-10-31 CN CN201711055211.5A patent/CN108082474B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364250B1 (en) * | 1998-09-25 | 2002-04-02 | Daimlerchrysler Aerospace Airbus Gmbh | Shell component for an aircraft fuselage and method of manufacturing the same |
| CN203528820U (en) * | 2012-12-14 | 2014-04-09 | 中航通飞研究院有限公司 | Large-scale fire extinguishing amphibious airplane |
| CN104229121A (en) * | 2013-06-21 | 2014-12-24 | 波音公司 | Symmetric wing rib with center plane fastened shear ties |
| WO2015142171A1 (en) * | 2014-03-17 | 2015-09-24 | Gtm Holding B.V. | Primary structure connecting element for aircraft and method for manufacturing the connecting element |
| CN206437192U (en) * | 2016-12-14 | 2017-08-25 | 中航通飞研究院有限公司 | It is a kind of rimless without beam composite fuselage big opening reinforcing frame |
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| Publication number | Publication date |
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| CN108082474A (en) | 2018-05-29 |
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Effective date of registration: 20221024 Address after: 519040 building 201, 999 Jinhai Middle Road, Jinwan District, Zhuhai City, Guangdong Province Applicant after: SOUTH CHINA AIRCRAFT INDUSTRY CO., LTD. OF CHINA AVIATION INDUSTRY GENERAL AIRCRAFT Co.,Ltd. Address before: 519040 AVIC Tongfei industrial base, aviation industrial park, Jinwan District, Zhuhai City, Guangdong Province Applicant before: R&D INSTITUTE OF CHINA AVIATION INDUSTRY GENERAL AIRCRAFT Co.,Ltd. |
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