CN113978692A - Cabin section bottom plate lightweight structure - Google Patents
Cabin section bottom plate lightweight structure Download PDFInfo
- Publication number
- CN113978692A CN113978692A CN202111354192.2A CN202111354192A CN113978692A CN 113978692 A CN113978692 A CN 113978692A CN 202111354192 A CN202111354192 A CN 202111354192A CN 113978692 A CN113978692 A CN 113978692A
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- China
- Prior art keywords
- bottom plate
- cabin
- ribs
- grid frame
- cabin section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 239000003292 glue Substances 0.000 claims abstract description 7
- 239000011152 fibreglass Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 241001391944 Commicarpus scandens Species 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 8
- 210000003205 muscle Anatomy 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B64C1/061—Frames
-
- 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
- B64C1/12—Construction or attachment of skin panels
-
- 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
- B64C2001/0054—Fuselage structures substantially made from particular materials
- B64C2001/0081—Fuselage structures substantially made from particular materials from metallic materials
Abstract
The invention provides a light weight structure of a cabin section bottom plate, which comprises the cabin section bottom plate, a grid frame and an L-shaped corner piece; the outer skin of the cabin bottom plate is made of glass fiber reinforced plastic materials, and the grid frame is made of aluminum alloy materials; the inner side surface of the cabin bottom plate is connected with the grid frame through an L-shaped corner piece in a glue riveting mode. The cabin bottom plate is made of aluminum alloy, the internal grid frame is made of aluminum alloy, and the cabin is light in overall weight, strong in internal supporting force and not easy to break; the cabin bottom plate and the grid frame are connected through the L-shaped corner pieces through glue rivets, the connection position precision is high, the connection is stable and reliable, and the manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of aircraft cabin section structures, and particularly relates to a cabin section bottom plate lightweight structure.
Background
The aircraft is an instrument flying object which is manufactured by human beings, can fly off the ground, flies in space, is controlled by human beings and flies in the atmosphere or in the space outside the atmosphere. The aircraft mainly comprises: aircraft, spacecraft, rockets, and missiles. The cabin section bottom plate of the aircraft is cast and integrally formed by adopting an aluminum alloy material, and an upper die and a lower die are required to be adopted during manufacturing so as to ensure that the overall structure of the cabin section bottom plate is firm.
However, the cabin bottom plate is made of aluminum alloy, and is integrally formed, so that the overall weight is heavy, the volume is large, and the cabin is easy to break; and adopt two upper and lower moulds preparation, the inside bearing structure design of bottom plate is simple, and hookup location precision is low, and manufacturing cost is high.
Disclosure of Invention
In view of the above, the invention aims to provide a light-weight structure of a cabin section bottom plate, so as to solve the problems that in the prior art, the cabin section bottom plate is made of an aluminum alloy material, is integrally formed and designed, has heavy weight and is easy to break; the upper die and the lower die are adopted for manufacturing, the design of the supporting structure in the bottom plate is simple, the precision of the connecting position is low, and the manufacturing cost is high.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a light weight structure of a cabin bottom plate comprises the cabin bottom plate, a grid frame and an L-shaped corner piece;
the outer skin of the cabin bottom plate is made of glass fiber reinforced plastic materials, and the grid frame is made of aluminum alloy materials;
the inner side surface of the cabin bottom plate is connected with the grid frame through an L-shaped corner piece in a glue riveting mode.
Furthermore, the thickness of the outer skin of the cabin bottom plate ranges from 2.5mm to 3.5 mm.
Furthermore, the grid framework comprises transverse ribs and longitudinal ribs;
the transverse ribs and the longitudinal ribs are of sheet structures, and the sheet widths of the transverse ribs and the longitudinal ribs are fixedly attached to the cabin section bottom plate;
the quantity of horizontal muscle, the quantity of indulging the muscle are a plurality ofly to horizontal muscle, indulge the muscle crisscross setting.
Furthermore, the side surface of the grid frame is provided with a [ type avoidance groove.
Furthermore, a mouth-shaped avoiding groove is arranged in the middle of the grid frame.
Furthermore, the grid framework also comprises support ribs;
the quantity of brace rod is a plurality of, and a plurality of brace rod equipartitions set up the both ends at net frame.
Furthermore, the width of the supporting rib is larger than that of the transverse rib.
Furthermore, a plurality of mounting holes are formed in the supporting ribs.
Furthermore, the grid framework also comprises connecting angle ribs;
one side of the right-angle edge of the connecting angle rib is connected with a cabin section bottom plate, and the other side of the right-angle edge of the connecting angle rib is connected with cabin section internal equipment;
the height of the connecting angle rib is greater than that of the longitudinal rib.
Further, the lateral surface of cabin section bottom plate is equipped with the inside sunken bar and dodges the groove, and the bar dodges the groove and forms the bar arch at the medial surface of cabin section bottom plate.
Compared with the prior art, the light weight structure of the cabin bottom plate has the following advantages:
according to the light-weight structure of the cabin section bottom plate, the outer skin of the cabin section bottom plate is made of the glass fiber reinforced plastic material, the internal grid frame is made of the aluminum alloy material, and after the two parts are connected, the overall weight is light, and the internal grid frame is strong in supporting force and not prone to fracture. The cabin section bottom plate is internally provided with a grid frame structure, so that the connection position precision is high, and the manufacturing cost is reduced. The inner side face of the cabin section bottom plate and the grid frame are bonded and fixed by glue, the connection position is firm, the L-shaped corner piece is connected by rivets, the cabin section bottom plate and the grid frame are reinforced, the installation position is stable, the manufacturing cost is reduced by a glue-rivet installation mode, and the installation is firm.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a light-weight structure of a deck section floor in an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a bottom schematic view of a light-weight structure of a deck section floor in an embodiment of the invention;
FIG. 4 is a top view of a deck section floor lightweight structure in an embodiment of the invention;
fig. 5 is a bottom view of the deck section bottom plate lightweight structure in the embodiment of the present invention;
fig. 6 is a front view of a deck section floor lightweight structure in an embodiment of the present invention.
Description of reference numerals:
100-bay section floor; 200-a grid framework;
300-L-shaped corner pieces; 101-a strip-shaped avoidance slot;
102-bar-shaped protrusions; 201-transverse bar;
202-longitudinal ribs; 203- [ type evasion groove;
204-a mouth-shaped avoidance slot; 205-support ribs;
206-mounting holes; 207-connecting the angle bars.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 6, the light weight structure of the cabin bottom plate provided by the invention comprises a cabin bottom plate 100, a grid frame 200 and an L-shaped corner piece 300;
the outer skin of the cabin segment bottom plate 100 is made of glass fiber reinforced plastic, and the grid frame 200 is made of aluminum alloy;
the inner side surface of the cabin bottom plate 100 is connected with the grid frame 200 through an L-shaped corner piece 300 by glue riveting.
Specifically, referring to fig. 1, the outer skin of the cabin segment bottom plate 100 is made of a glass fiber reinforced plastic material, the grid frame 200 inside the cabin segment bottom plate 100 is made of an aluminum alloy material, the two are separately designed and then installed, and the manufacturing cost is low. The material of the deck section floor 100 is light in weight, reducing the overall weight.
The grid frame 200 inside the cabin section bottom plate 100 is made of an aluminum alloy material, the inside of the cabin section bottom plate 100 is supported, and the supporting force inside the cabin section bottom plate 100 is strong and is not easy to break.
The internal grid frame 200 has reasonable structural design, so that the installation position of the internal equipment of the cabin section bottom plate 100 is stable, and the connection position precision is high.
The inner side surface of the cabin bottom plate 100 and the grid frame 200 are bonded and fixed through glue, and then are reinforced through the L-shaped corner pieces 300 and the rivets, so that the stability of the connection position is ensured, and the precision of the connection position is high.
Further, the thickness of the outer skin of the cabin segment floor 100 ranges from 2.5mm to 3.5 mm.
Specifically, in this embodiment, the thickness of the outer skin of the cabin segment floor 100 is 3 mm.
Further, the lattice frame 200 includes transverse ribs 201 and longitudinal ribs 202;
the transverse ribs 201 and the longitudinal ribs 202 are both of sheet structures, and the sheet widths of the transverse ribs and the longitudinal ribs are fixedly attached to the cabin bottom plate 100;
the number of the transverse ribs 201 and the number of the longitudinal ribs 202 are both multiple, and the transverse ribs 201 and the longitudinal ribs 202 are arranged in a criss-cross mode.
Specifically, referring to fig. 1, 2, and 4, the transverse ribs 201 and the longitudinal ribs 202 are both sheet-shaped structures, and are attached to and fixed to the deck section bottom plate 100 in the width direction of the sheet-shaped structures, so that the strength of the connection structure at the connection positions between the transverse ribs 201 and the longitudinal ribs 202 and the deck section bottom plate 100 is increased. The sheet structure is not easily broken by such a connection method.
Referring to fig. 4, the transverse ribs 201 and the longitudinal ribs 202 are perpendicular to each other and criss-cross, so that the stress at each position of the whole grid frame 200 is balanced, and the supporting force at the inner side surface of the cabin section bottom plate 100 is stable.
In other embodiments, the transverse ribs 201 and the longitudinal ribs 202 may also adopt other connection modes, for example: the transverse ribs 201 and the longitudinal ribs 202 are mutually crossed, and the crossed angle is an acute angle, an obtuse angle and the like. In actual use, the crossing angle of the equipment in the cabin bottom plate 100 is adjusted according to the installation position of the equipment in the cabin bottom plate 100, so that the installation position of the equipment in the cabin bottom plate 100 is firm.
Further, the grid frame 200 is provided with a shape of a "type avoiding groove 203 on a side thereof.
Specifically, referring to fig. 4, since the upper and lower sides of the right end of the cabin floor 100 are respectively provided with equipment, the corresponding positions on the upper and lower sides of the right end of the grid frame 200 are respectively provided with a [ type ] avoiding groove 203 with an opening on the outer side, so that an avoiding groove is formed in the cabin shell 100, and the internal equipment is installed to protect the internal equipment.
Further, a mouth-shaped avoiding groove 204 is provided at a middle position of the lattice frame 200.
Specifically, referring to fig. 1 and 4, since the equipment is installed at the middle position of the inner side surface of the bay bottom plate 100, in order to prevent damage to the internal equipment, a plurality of notch-shaped avoiding grooves 204 are formed at the middle position of the lattice frame 200, and an avoiding region is formed at the middle position inside the bay bottom plate 100 by using the notch-shaped avoiding grooves 204, so that the internal equipment can be installed.
Further, the grid frame 200 further includes support ribs 205;
the number of the support ribs 205 is plural, and the plural support ribs 205 are uniformly distributed at both ends of the grid frame 200.
Specifically, referring to fig. 1 and 4, the plurality of support ribs 205 are disposed at the middle position of the inner side surface of the deck section bottom plate 100, and not only support the middle position of the inner side surface of the deck section bottom plate 100, but also can be used for installing internal equipment by using the support ribs 205 and fixing the internal equipment.
Further, the width of the support rib 205 is larger than the width of the transverse rib 201.
Specifically, referring to fig. 1 and 4, since the width of the support rib 205 is greater than the width of the transverse rib 201, the support force formed by the plurality of support ribs 205 at the middle position of the inner side surface of the deck section bottom plate 100 is stronger than the support force of the transverse rib 201.
Further, the support rib 205 is provided with a plurality of mounting holes 206.
Specifically, referring to fig. 1 and 4, the mounting holes 206 are threaded through holes formed in the support ribs 205, the inner side surfaces of the support ribs 205 are fixed to the inner side surfaces of the cabin floor 100 by gluing, and then fixed to the cabin floor 100 by countersunk screws, on one hand, the plurality of mounting holes 206 fix the support ribs 205 to the cabin floor 100 by countersunk screws, and on the other hand, the plurality of mounting holes 206 can also fix equipment inside the cabin floor 100.
Further, the grid frame 200 further includes connecting angle ribs 207;
one side of the connecting angle rib 207 is connected with the cabin section bottom plate 100, and the other side of the connecting angle rib 207 is connected with the cabin section internal equipment;
the height of the connecting angle rib 207 is greater than the height of the longitudinal rib 202.
Specifically, referring to fig. 1 and 6, the bottom of the vertical side of the connecting angle rib 207 is fixed to the cabin section bottom plate 100 by adhesive, the vertical side of the connecting angle rib 207 is fixed to the cabin section bottom plate 100 by an L-shaped angle piece 300, and then the connecting angle rib 207 is fixed to the vertical side by a countersunk screw.
The horizontal side of the connecting angle rib 207 is arranged in parallel with the cabin floor 100, and the horizontal side is used for connecting equipment inside the cabin.
The height of the connecting angle rib 207 is greater than that of the longitudinal rib 202, so that the part of the connecting angle rib 207, which is higher than the longitudinal rib 202, can be clamped and fixed with equipment inside the cabin section, and the installation position of the internal equipment is ensured to be firm.
Further, the outer side surface of the cabin section bottom plate 100 is provided with an inward-recessed strip-shaped avoiding groove 101, and the strip-shaped avoiding groove 101 forms a strip-shaped protrusion 102 on the inner side surface of the cabin section bottom plate 100.
Specifically, referring to fig. 1 and 3, an inward concave strip-shaped avoiding groove 101 is formed in the outer side surface, i.e., the bottom position, of the cabin section bottom plate 100, and equipment at the bottom of the cabin section bottom plate 100 can be avoided due to the arrangement of the strip-shaped avoiding groove 101.
The inward side, namely the upper portion, of the cabin bottom plate 100 is provided with the outward protruding strip-shaped protrusions 102, the arrangement of the strip-shaped protrusions 102 enables equipment to be better fixed under the condition that the installation of internal equipment is not affected, and occupied blocks are formed on the inward side of the cabin bottom plate 100, so that the space inside the cabin is prevented from being vacant, and the structural design inside the cabin is tidy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a cabin section bottom plate lightweight structure which characterized in that: comprises a cabin bottom plate (100), a grid frame (200) and an L-shaped angle piece (300);
the outer skin of the cabin section bottom plate (100) is made of glass fiber reinforced plastic, and the grid frame (200) is made of aluminum alloy material;
the inner side surface of the cabin bottom plate (100) is connected with the grid frame (200) through the L-shaped corner pieces (300) in a glue riveting mode.
2. The deck section floor light-weight structure according to claim 1, wherein: the thickness of the outer skin of the cabin section bottom plate (100) ranges from 2.5mm to 3.5 mm.
3. The deck segment floor lightweight structure according to claim 2, characterized in that: the grid framework (200) comprises transverse ribs (201) and longitudinal ribs (202);
the transverse ribs (201) and the longitudinal ribs (202) are of sheet structures, and the sheet widths of the transverse ribs and the longitudinal ribs are fixedly attached to the cabin bottom plate (100);
the number of the transverse ribs (201) and the number of the longitudinal ribs (202) are both multiple, and the transverse ribs (201) and the longitudinal ribs (202) are arranged in a criss-cross mode.
4. The deck segment floor lightening structure of claim 3, wherein: the side surface of the grid frame (200) is provided with a [ type avoidance groove (203).
5. The deck segment floor lightening structure of claim 4, wherein: and a mouth-shaped avoidance groove (204) is arranged in the middle of the grid frame (200).
6. The deck segment floor lightening structure of claim 5, wherein: the grid framework (200) further comprises support ribs (205);
the number of the supporting ribs (205) is multiple, and the supporting ribs (205) are uniformly distributed at two ends of the grid frame (200).
7. The deck segment floor lightening structure of claim 6, wherein: the width of the supporting rib (205) is larger than that of the transverse rib (201).
8. The deck segment floor lightening structure of claim 7, wherein: the supporting ribs (205) are provided with a plurality of mounting holes (206).
9. The deck segment floor lightening structure of claim 8, wherein: the grid framework (200) further comprises connecting angle ribs (207);
one side right-angle edge of the connecting angle rib (207) is connected with the cabin section bottom plate (100), and the other side right-angle edge of the connecting angle rib (207) is connected with cabin section internal equipment;
the height of the connecting angle rib (207) is greater than that of the longitudinal rib (202).
10. The deck segment floor lightening structure of claim 9, wherein: the outer side surface of the cabin section bottom plate (100) is provided with an inwards-recessed strip-shaped avoiding groove (101), and strip-shaped protrusions (102) are formed on the inner side surface of the cabin section bottom plate (100) by the strip-shaped avoiding groove (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354192.2A CN113978692A (en) | 2021-11-16 | 2021-11-16 | Cabin section bottom plate lightweight structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354192.2A CN113978692A (en) | 2021-11-16 | 2021-11-16 | Cabin section bottom plate lightweight structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113978692A true CN113978692A (en) | 2022-01-28 |
Family
ID=79748753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111354192.2A Pending CN113978692A (en) | 2021-11-16 | 2021-11-16 | Cabin section bottom plate lightweight structure |
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| Country | Link |
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| CN (1) | CN113978692A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080156935A1 (en) * | 2006-05-17 | 2008-07-03 | Airbus France, Societe Par Actions Simplifiee | Composite internal beam for reinforcing the structrue of an aircraft |
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| CN103639668A (en) * | 2013-12-09 | 2014-03-19 | 天津大学 | Rapid manufacturing method used for outer storing box gridding wallboard of aerospace craft |
| CN106002088A (en) * | 2016-05-24 | 2016-10-12 | 湖北三江航天红阳机电有限公司 | Manufacturing method for integral wing-body-fused cabin |
| EP3456624A1 (en) * | 2017-09-14 | 2019-03-20 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | A composite sandwich panel with a sandwich area |
| CN111532394A (en) * | 2020-05-14 | 2020-08-14 | 中国船舶科学研究中心 | Glass fiber reinforced plastic metal cabin section combined type modularized underwater test model |
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| CN212290392U (en) * | 2020-10-14 | 2021-01-05 | 中国长征火箭有限公司 | Composite cabin section structure and aircraft |
| CN112611269A (en) * | 2021-02-04 | 2021-04-06 | 北京星际荣耀空间科技股份有限公司 | Carrier rocket |
| CN214397183U (en) * | 2020-11-17 | 2021-10-15 | 中航通飞华南飞机工业有限公司 | Sealing installation structure for ice-throwing-preventing plate of propeller plane body |
-
2021
- 2021-11-16 CN CN202111354192.2A patent/CN113978692A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080156935A1 (en) * | 2006-05-17 | 2008-07-03 | Airbus France, Societe Par Actions Simplifiee | Composite internal beam for reinforcing the structrue of an aircraft |
| CN202329435U (en) * | 2011-12-04 | 2012-07-11 | 国营红阳机械厂 | Multilayer-structured heat-insulating integrated cabin section |
| CN102602528A (en) * | 2012-03-06 | 2012-07-25 | 大连理工大学 | Orthogonal grating cylindrical shell provided with reinforcement ribs and circular opening and made of composite materials |
| CN103639668A (en) * | 2013-12-09 | 2014-03-19 | 天津大学 | Rapid manufacturing method used for outer storing box gridding wallboard of aerospace craft |
| CN106002088A (en) * | 2016-05-24 | 2016-10-12 | 湖北三江航天红阳机电有限公司 | Manufacturing method for integral wing-body-fused cabin |
| EP3456624A1 (en) * | 2017-09-14 | 2019-03-20 | AIRBUS HELICOPTERS DEUTSCHLAND GmbH | A composite sandwich panel with a sandwich area |
| CN111532394A (en) * | 2020-05-14 | 2020-08-14 | 中国船舶科学研究中心 | Glass fiber reinforced plastic metal cabin section combined type modularized underwater test model |
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