CN210834835U - Connection structure of wing box test piece - Google Patents
Connection structure of wing box test piece Download PDFInfo
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- CN210834835U CN210834835U CN201921561679.6U CN201921561679U CN210834835U CN 210834835 U CN210834835 U CN 210834835U CN 201921561679 U CN201921561679 U CN 201921561679U CN 210834835 U CN210834835 U CN 210834835U
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Abstract
The utility model discloses a connecting structure of a wing box section test piece, which belongs to the field of airplane body test design and comprises a butt joint angle piece and a butt joint belt plate, wherein the butt joint angle piece is arranged at the joint of a body wall plate and a dummy wall plate and is L-shaped, and the body wall plate and the dummy wall plate are clamped by the two butt joint angle pieces at two sides; the butt joint band plate is arranged on one side, far away from the butt joint angle piece, of the body wallboard, and the butt joint band plate is in butt joint with the body wallboard and the dummy wallboard. The two butt joint angle pieces are separated, so that splicing alignment is not needed, the requirement on axial degree is lowered, assembly positioning is simplified, and assembly efficiency is improved; the butt joint angle piece is the L type, and two adjacent butt joint angle pieces constitute double shear structure rather than the body wallboard and the dummy wall board that press from both sides tightly, guarantee butt joint structure's intensity and stability for the atress is even. Butt joint band plate and body wallboard and dummy wallboard all butt joint, increase area of contact for body wallboard and dummy wallboard are connected more stably.
Description
Technical Field
The utility model relates to an aircraft organism experimental design field especially relates to a connection structure of wing box test piece.
Background
In the airworthiness examination of civil aircraft wing structures, the composite structures must be verified by strict building block tests, including typical box level, full size box level tests, and the like. Generally, in a high-level test, according to test capability and test loading requirements, a metal dummy part box section is designed outside a composite material body wing box section to be checked as a loading section, and external loads are equivalently applied to the loading section, so that the production cost (material cost, mold cost and the like) and the production period of a wing test part can be greatly reduced, and the test requirements are met.
In the manufacturing and assembling of the wing test piece, the assembling butt joint of the composite material body box section and the metal dummy piece box section is very important, and in the butt joint of the box sections, the butt joint of the wall plate is important, so that the manufacturing quality of the test piece is directly determined, and the accuracy of a test result is influenced.
In the prior art, the butt joint of the body box section and the metal dummy box section is as shown in fig. 1 and fig. 2, at the butt joint position inside the box section, an integral butt joint 103 is arranged between the body stringer 101 and the dummy stringer 102, a butt joint groove is formed in the integral butt joint 103, the end heads of the body stringer 101 and the dummy stringer 102 need to be inserted into the butt joint groove, and the requirement on the axial length of the composite material body stringer 101 is high. Because the length of stringer is longer, can produce certain degree deformation in the combined material forming process for the assembly positioning difficulty between combined material stringer and the butt joint groove has reduced assembly efficiency, has increased the condemned risk of assembly connecting piece.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a connection structure of wing box test piece to solve the assembly positioning difficulty that exists among the prior art, the technical problem that assembly efficiency is low.
As the conception, the utility model adopts the technical proposal that:
a connection structure of a wing box test piece, comprising:
the butt joint angle pieces are arranged at the joint of the body wall plate and the dummy wall plate, are L-shaped, and clamp the body wall plate and the dummy wall plate at two sides;
and the butt joint strip plate is arranged on one side of the body wallboard, which is far away from the butt joint angle sheet, and the butt joint strip plate is abutted against the body wallboard and the dummy wallboard.
The body wallboard comprises a plurality of body stringers, the dummy wallboard comprises a plurality of dummy stringers, each body stringer is in butt joint with one dummy stringer, and the butt joint corner piece is arranged at the joint of the body stringer and the dummy stringer.
The two butt joint angle pieces are symmetrically arranged on two sides of the joint of the body stringer and the dummy stringer.
The body stringer comprises a body stringer bottom edge and a body stringer web which are vertically connected, the dummy stringer comprises a dummy stringer bottom edge and a dummy stringer web which are vertically connected, and the butt joint corner pieces simultaneously clamp the body stringer web and the dummy stringer web.
The end face of the body stringer web is a first end face, the first end face is perpendicular to the body stringer bottom edge, the end face of the dummy stringer web is a second end face, the second end face is perpendicular to the dummy stringer bottom edge, and the first end face is in butt joint with the second end face.
Wherein the butt-joint corner pieces simultaneously abut the body stringer bottom edges and the dummy stringer bottom edges.
The cross sections of the body stringer and the dummy stringer are both T-shaped.
The body wallboard further comprises a body skin, the body stringers are arranged on the body skin at intervals, the dummy wallboard further comprises dummy skins, the dummy stringers are arranged on the dummy skins at intervals, the body skin is in butt joint with the dummy skins, and butt joint belt plates are arranged on one sides, far away from the body stringers, of the body skin and abut against the dummy skins.
The connecting structure comprises a body wall plate, a plurality of butt joint angle pieces, a plurality of butt joint strip plates and a plurality of first fasteners, wherein the butt joint angle pieces, the body wall plate and the butt joint strip plates are connected through the first fasteners.
The wall plate comprises a butt joint angle piece, a dummy wall plate and a butt joint strip plate, wherein the butt joint angle piece is connected with the dummy wall plate through the butt joint strip plate, and the butt joint strip plate is connected with the dummy wall plate through the butt joint angle piece.
The utility model has the advantages that:
the utility model provides a connection structure of wing box section test piece, when body wallboard and dummy wall board butt joint, through two butt joint angle pieces at both sides tight body wallboard and dummy wall board, because two butt joint angle pieces are separately, need not to peg graft and counterpoint, and the axiality requirement to the stringer is reduced, has simplified the positioning process of assembly, has improved assembly efficiency; the butt joint angle piece is the L type, and two adjacent butt joint angle pieces constitute double shear structure rather than the body wallboard and the dummy wall board that press from both sides tightly, guarantee butt joint structure's intensity and stability for the atress is even. Butt joint band plate and body wallboard and false piece wallboard equal butt, increase area of contact for the connection of body wallboard and false piece wallboard is more stable.
Drawings
FIG. 1 is a schematic illustration of a prior art butt joint of a body box section and a metal dummy box section;
FIG. 2 is a cross-sectional view taken in the span direction of FIG. 1;
fig. 3 is a schematic view of an orientation of a connection structure of a wing box test piece according to an embodiment of the present invention;
fig. 4 is a schematic view of another direction of the connection structure of the wing box test piece provided by the embodiment of the invention;
fig. 5 is a first cross-sectional view of a connection structure of a wing box test piece along a chord direction according to an embodiment of the present invention;
fig. 6 is a second cross-sectional view of the connection structure of the wing box test piece provided by the embodiment of the present invention along the chord direction;
fig. 7 is a cross-sectional view of a connection structure of a wing box test piece according to an embodiment of the present invention along a span direction.
In fig. 1 and 2:
101. a body stringer; 102. a dummy stringer; 103. an integral butt joint;
in fig. 3 to 7:
11. covering the body with skin; 12. a body stringer; 121. a body stringer bottom edge; 122. a body stringer web; 1221. a first end face;
21. covering a fake piece; 22. a dummy stringer; 221. a false stringer bottom edge; 222. a dummy stringer web; 2221. a second end face;
3. butting corner pieces;
4. and (6) butting the strip plates.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 3 to 7, an embodiment of the present invention provides a connection structure of a wing box section test piece, for connecting a body panel and a dummy panel.
The body wallboard comprises a body skin 11 and a plurality of body stringers 12 arranged on the body skin 11 at intervals, the dummy wallboard comprises a dummy skin 21 and a plurality of dummy stringers 22 arranged on the dummy skin 21 at intervals, the body skin 11 is in butt joint with the dummy skin 21 during assembly, and meanwhile, each body stringer 12 is in butt joint with one dummy stringer 22.
The connecting structure of the wing box test piece comprises a butt joint angle piece 3 and a butt joint belt plate 4. The butt joint angle pieces 3 are arranged at the connecting positions of the body wall plate and the dummy wall plate, the butt joint angle pieces 3 are L-shaped, and the body wall plate and the dummy wall plate are clamped by the two butt joint angle pieces 3 at two sides; specifically, butt-joint corner pieces 3 are provided at the joint of body stringer 12 and dummy stringer 22, and clamp body stringer 12 and dummy stringer 22 at both sides. The butt joint strip plate 4 is arranged on one side of the body wall plate, which is far away from the butt joint angle piece 3, and the butt joint strip plate 4 is abutted against the body wall plate and the dummy wall plate; specifically, the butt strap 4 abuts against the body skin 11 and the dummy skin 21 at the same time on the side of the body skin 11 away from the body stringer 12, and the butt strap 4 abuts against the butt joint of the body skin 11 and the dummy skin 21.
The body wallboard and the dummy wallboard are clamped at two sides through the two butt joint angle pieces 3, and the two butt joint angle pieces 3 are separated, so that splicing alignment is not needed, the requirement on the axial degree of the composite material stringer is reduced, the assembling and positioning process is simplified, the assembling efficiency is improved, and the risk of scrapping of the assembling and connecting piece is reduced; butt joint fillet 3 is the L type, and two adjacent butt joint fillets 3 constitute double shear structure rather than the body wallboard and the dummy wall board that press from both sides tightly, guarantee butt joint structure's intensity and stability for the atress is even. Butt joint band plate 4 and body wallboard and dummy wallboard all butt joint, increase area of contact for the connection of body wallboard and dummy wallboard is more stable.
After the alignment is completed, the assembly and the matching can be completed only by fastening through a fastening piece. The connecting structure of the wing box test piece comprises a plurality of first fasteners and a plurality of second fasteners, wherein the first fasteners are connected with the butt joint angle sheet 3, the body wall plate and the butt joint strip plate 4. The second fastener connects the butt gusset 3, the dummy wall panel and the butt strap panel 4. Optionally, the first and second fasteners may each be a screw.
Corresponding to each group of body stringers 12 and dummy stringers 22, two butt joint angle pieces 3 are symmetrically arranged on both sides of the joint of the body stringers 12 and the dummy stringers 22, so that the stress of the butt joint angle pieces 3 is balanced.
At the junction of the body panel and the dummy panel, a cross-section taken perpendicular to the direction in which body stringer 12 extends, i.e., a cross-section taken along the chord direction, is taken along the line of the cross-section at the interface of body stringer 12 and dummy stringer 22, as viewed in the direction of body stringer 12, as shown in fig. 5, and as viewed in the direction of dummy stringer 22, as shown in fig. 6. On one side of the butt-joint corner piece 3, a cross-section is taken parallel to the extending direction of the body stringer 12, i.e., in a spanwise direction, and the cross-section is taken on the butt-joint corner piece 3, resulting in a cross-sectional view as shown in fig. 7.
In this embodiment, the cross-sectional shapes of body stringer 12 and dummy stringer 22 are both T-shaped to facilitate contact with butt-joint gusset 3.
In the prior art, webs at the butt joint ends of the body stringer and the dummy stringer are in a bevel configuration, and the bottom edges of the webs are not widened, so that on one hand, the webs of the stringer are difficult to machine, and time and labor are wasted; on the other hand, cushion blocks are required to be added at the butt joint surfaces between adjacent body stringers, so that the assembling time is long; on the other hand, the contact area of the butt joint of the body stringer and the dummy stringer is small, so that load transmission is not facilitated, and the load transmission efficiency is low.
In this embodiment, the ends of body stringer 12 and dummy stringer 22 are in a non-chamfered straight configuration. When body stringer 12 and dummy stringer 22 are butted, not only does body stringer bottom edge 121 butt up with dummy stringer bottom edge 221, but body stringer web 122 butt up with dummy stringer web 222.
The end face of body stringer web 122 is first end face 1221, first end face 1221 is perpendicular to body stringer bottom edge 121, the end face of dummy stringer web 222 is second end face 2221, second end face 2221 is perpendicular to dummy stringer bottom edge 221, and first end face 1221 is in butt joint with second end face 2221. That is, the clamping interface between body stringer 12 and dummy stringer 22 is changed from the original rectangular clamping interface to the existing T-shaped clamping interface to ensure the connection stability and the load transfer stability. The arrangement of the butt joint angle pieces 3 ensures that the body stringer 12 and the dummy stringer 22 have larger clamping butt joint area, and improves the force transmission performance of the butt joint structure; and a cushion block is omitted, and the assembly efficiency is improved.
The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a connection structure of wing box section testpieces which characterized in that includes:
the butt joint angle pieces (3) are arranged at the joint of the body wall plate and the dummy wall plate, the butt joint angle pieces (3) are L-shaped, and the body wall plate and the dummy wall plate are clamped by the two butt joint angle pieces (3) at two sides;
the butt joint strip plate (4) is arranged on one side, far away from the butt joint angle piece (3), of the body wall plate, and the butt joint strip plate (4) is in butt joint with the body wall plate and the dummy wall plate.
2. The connection structure of a wing box section test piece according to claim 1, wherein the body panel comprises a plurality of body stringers (12), the dummy panel comprises a plurality of dummy stringers (22), each body stringer (12) is butted against one dummy stringer (22), and the butt-joint corner piece (3) is provided at a connection of the body stringer (12) and the dummy stringer (22).
3. The connection structure of the wing box test piece according to claim 2, characterized in that two butt-jointed corner pieces (3) are symmetrically arranged on both sides of the connection of the body stringer (12) and the dummy stringer (22).
4. The connection structure of a wing box trial according to claim 2, wherein the body stringer (12) includes a vertically connected body stringer bottom edge (121) and body stringer web (122), the dummy stringer (22) includes a vertically connected dummy stringer bottom edge (221) and dummy stringer web (222), and both of the butt-corner pieces (3) simultaneously clamp the body stringer web (122) and the dummy stringer web (222).
5. The connection structure of the wing box section test piece according to claim 4, wherein the end face of the body stringer web (122) is a first end face (1221), the first end face (1221) is perpendicular to the body stringer base edge (121), the end face of the dummy stringer web (222) is a second end face (2221), the second end face (2221) is perpendicular to the dummy stringer base edge (221), and the first end face (1221) is butted against the second end face (2221).
6. The connection structure of a wing box trial according to claim 4, characterized in that the butt-tab (3) abuts both the body stringer bottom edge (121) and the dummy stringer bottom edge (221).
7. The connection structure of the wing box test piece according to claim 4, wherein the cross-sectional shapes of the body stringer (12) and the dummy stringer (22) are both T-shaped.
8. The connection structure of the wing box section test piece according to claim 2, wherein the body panel further comprises a body skin (11), a plurality of the body stringers (12) are arranged on the body skin (11) at intervals, the dummy panel further comprises a dummy skin (21), a plurality of the dummy stringers (22) are arranged on the dummy skin (21) at intervals, the body skin (11) is butted with the dummy skin (21), and the butt-joint strip plate (4) is butted with the body skin (11) and the dummy skin (21) at the same time on the side of the body skin (11) far away from the body stringers (12).
9. The connection structure of the wing box section test piece according to any one of claims 1 to 8, further comprising a plurality of first fasteners connecting the butt-joint corner piece (3), the body wall plate and the butt-joint strap plate (4).
10. The connection structure of the wing box test piece according to any one of claims 1 to 8, further comprising a plurality of second fasteners connecting the butt-joint corner piece (3), the dummy wall plate and the butt-joint strap plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561679.6U CN210834835U (en) | 2019-09-19 | 2019-09-19 | Connection structure of wing box test piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921561679.6U CN210834835U (en) | 2019-09-19 | 2019-09-19 | Connection structure of wing box test piece |
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| CN210834835U true CN210834835U (en) | 2020-06-23 |
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| CN201921561679.6U Active CN210834835U (en) | 2019-09-19 | 2019-09-19 | Connection structure of wing box test piece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501467A (en) * | 2019-09-19 | 2019-11-26 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of connection structure of wing box specimen of plane |
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2019
- 2019-09-19 CN CN201921561679.6U patent/CN210834835U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501467A (en) * | 2019-09-19 | 2019-11-26 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of connection structure of wing box specimen of plane |
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