CN215865785U - Split type butt joint connection structure - Google Patents
Split type butt joint connection structure Download PDFInfo
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- CN215865785U CN215865785U CN202122160818.8U CN202122160818U CN215865785U CN 215865785 U CN215865785 U CN 215865785U CN 202122160818 U CN202122160818 U CN 202122160818U CN 215865785 U CN215865785 U CN 215865785U
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- split type
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- connecting piece
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Abstract
The application belongs to the technical field of structural strength analysis, and particularly relates to a split type butt joint structure. The method comprises the following steps: the metal machine adds joint, compound material rib, first split type connecting piece and second split type connecting piece. A concentrated load loading point is arranged on the metal machine joint; the composite rib is matched with the metal machining joint; two ends of the first split type connecting piece are respectively connected with the metal machining joint and the composite rib through connecting nails; two ends of the second split connecting piece are respectively connected with the metal machining joint and the composite rib through connecting nails; wherein a parting plane of the first and second split connectors is distal from the concentrated load application point. The split type butt joint structure can avoid interference generated in the process of assembling multiple parts, reduces assembling stress, increases assembling compensation amount, reduces assembling difficulty and has good interchangeability.
Description
Technical Field
The application belongs to the technical field of structural strength analysis, and particularly relates to a split type butt joint structure.
Background
Aircraft structures employ metal joints to transfer concentrated loads, which are often butted against composite ribs via connectors to convert the concentrated loads into loads distributed within the thin-walled structural plane.
Because the machining deviation is generated in the production process of the metal machine joint and the composite rib, the error exists between the actual delivery state and the ideal design state, and the connector is easy to interfere with the joint and the composite rib during assembly.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
The aim of this application is to provide a split type butt joint connection structure to solve at least one problem that prior art exists.
The technical scheme of the application is as follows:
a split butt connection structure comprising:
the metal machine adding joint is provided with a concentrated load loading point;
the composite rib is matched with the metal machining joint;
the two ends of the first split connecting piece are respectively connected with the metal machining connector and the composite rib through connecting nails;
the two ends of the second split connecting piece are respectively connected with the metal machining joint and the composite rib through connecting nails;
wherein a parting plane of the first and second split connectors is distal from the concentrated load application point.
Optionally, the metal machining joint is sequentially divided into a first region, a second region and a third region along a direction perpendicular to a concentrated load loading direction, the concentrated load loading point is located in the first region, and a separation surface of the first split type connecting piece and the second split type connecting piece is located in the third region.
Optionally, the parting plane of the first and second split connectors is located at 80% of the overall length perpendicular to the direction of concentrated load loading.
Optionally, the separation gap δ of the separation surface is 2 mm.
Optionally, the thickness of one end of the first split type connecting piece connected with the metal machining joint is larger than that of one end connected with the composite rib;
the thickness of one end of the second split type connecting piece, which is connected with the metal machining joint, is larger than that of one end of the second split type connecting piece, which is connected with the composite rib.
Optionally, the metal machining joint, the composite rib, the first split type connecting piece and the second split type connecting piece are all provided with a rim strip.
Alternatively,
the thickness of the edge strip at one end of the first split type connecting piece, which is connected with the metal machining connector, is larger than that of the edge strip at one end of the first split type connecting piece, which is connected with the composite rib;
the thickness of the edge strip at one end of the second split connecting piece, which is connected with the metal machining joint, is larger than that of the edge strip at one end of the second split connecting piece, which is connected with the composite rib.
Utility model has the following beneficial technical effects:
the split type butt joint structure can avoid interference generated in the process of assembling multiple parts, reduces assembling stress, increases assembling compensation amount, reduces assembling difficulty and has good interchangeability.
Drawings
FIG. 1 is a general schematic view of a split docking connection configuration according to an embodiment of the present application;
FIG. 2 is a finite element model diagram of a control surface concentrated loading structure according to an embodiment of the present application;
FIG. 3 is a stress cloud diagram of a control surface split type connector according to an embodiment of the application;
fig. 4 is a schematic view of a split connector according to an embodiment of the present application.
Wherein:
1-metal machining joint; 2-composite ribs; 3-a first split connector; 4-a second split connection; 5-connecting nails.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "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 merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1 to 4.
The application provides a split type butt joint connection structure includes: the composite material comprises a metal machining joint 1, a composite rib 2, a first split type connecting piece 3 and a second split type connecting piece 4.
Specifically, as shown in fig. 1, a concentrated load loading point is arranged on the metal machine add-on connector 1, the composite rib 2 is matched with the metal machine add-on connector 1, and the metal machine add-on connector 1 is mechanically connected with the composite rib 2 through a first split type connecting piece 3 and a second split type connecting piece 4. The two ends of the first split type connecting piece 3 are respectively connected with the metal machining joint 1 and the composite rib 2 through a plurality of connecting nails 5, and similarly, the two ends of the second split type connecting piece 4 are respectively connected with the metal machining joint 1 and the composite rib 2 through a plurality of connecting nails 5; wherein the parting plane of the first and second split connectors 3, 4 is distant from the point of concentrated load application.
According to the split type butt joint connecting structure, the metal machine adding joint 1 is sequentially divided into the first area A, the second area B and the third area C along the direction perpendicular to the concentrated load loading direction, the concentrated load F is applied to the concentrated load loading point of the metal machine adding joint 1, and the concentrated load loading point is located in the first area A. Under the action of the concentrated load F, the loading direction is as shown in the figure, the separating surface of the split type connecting piece cannot be designed along the force line direction of the concentrated load F and the first area A and the second area B with higher rigidity of the metal machine adding joint 1, the rigidity of the third area C at the upper end of the metal machine adding joint 1 is lower, the stress of the connecting piece is lower, and therefore the separating surface of the first split type connecting piece 3 and the second split type connecting piece 4 is located in the third area C.
Advantageously, in the present embodiment, the parting plane of the first and second divided connecting members 3 and 4 is located at 80% of the entire length perpendicular to the direction of concentrated load loading.
It is understood that, in the present embodiment, the separation gap δ of the separation plane is determined to be 2mm depending on the work piece.
In the preferred embodiment of the present application, the thickness of the end of the first split connector 3 connected to the metal machining joint 1 is greater than the thickness of the end connected to the composite rib 2; the thickness of one end of the second split type connecting piece 4 connected with the metal machining joint 1 is larger than that of one end connected with the composite rib 2. The metal machine adding connector 1, the composite rib 2, the first split type connecting piece 3 and the second split type connecting piece 4 are all provided with edge strips. Preferably, the thickness of the edge strip at one end of the first split connecting piece 3 connected with the metal machining connector 1 is larger than that of the edge strip at one end connected with the composite rib 2; the thickness of the edge strip at one end of the second split type connecting piece 4 connected with the metal machining joint 1 is larger than that of the edge strip at one end connected with the composite rib 2.
In an embodiment of the application, the split type butt joint connection structure for the concentrated load transfer of the control surface of a certain large aircraft can determine the thickness parameter of the split type connecting piece in the following way:
firstly, establishing a finite element model of a control surface concentrated load transfer structure shown in FIG. 2;
then, according to the stress cloud chart of the control surface split type connector shown in the figure 3, parameters of the split type connector are determined, and the parameters are shown in the figure 4.
In the embodiment, the thickness of one end of the first split type connecting piece 3 connected with the metal machining connector 1 is 2.5mm, and the thickness of one end connected with the composite rib 2 is 2.0 mm; the thickness of the edge strip at one end of the first split type connecting piece 3 connected with the metal machining connector 1 is 2.9mm, and the thickness of the edge strip at one end connected with the composite rib 2 is 2.3 mm. The second split type connecting piece 4 is divided into two areas perpendicular to the concentrated load loading direction, the thickness of one end, connected with the metal machine adding joint 1, of the upper end area is 3.0mm, the thickness of one end, connected with the composite rib 2, of the lower end area is 2.5mm, the thickness of one end, connected with the metal machine adding joint 1, of the lower end area is 3.5mm, and the thickness of one end, connected with the composite rib 2, of the lower end area is 2.8 mm; the thickness of the edge strip at one end of the second split type connecting piece 4 connected with the metal machining joint 1 is 3.7mm, and the thickness of the edge strip at one end connected with the composite rib 2 is 3.0 mm.
The split type butt joint structure comprehensively examines the arrangement of the connecting nails of the metal machine additional joint and the composite material ribs according to the existing stress form of the metal machine additional joint, designs the separating surface of the split type connecting piece, refers to the production of a process piece, designs the gap amount of the process piece, and determines the thickness parameter of the split type connecting piece according to the strength calculation result. The assembling method is simple in assembling, saves assembling time, can avoid interference generated in the assembling process of multiple parts, reduces assembling stress, increases assembling compensation amount, reduces assembling difficulty, and has good interchangeability.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A split type butt joint connection structure, comprising:
the metal machine adding joint (1) is provided with a concentrated load loading point;
the composite rib (2), the composite rib (2) is matched with the metal machining joint (1);
the two ends of the first split connecting piece (3) are respectively connected with the metal machining joint (1) and the composite rib (2) through connecting nails (5);
the two ends of the second split type connecting piece (4) are respectively connected with the metal machining joint (1) and the composite rib (2) through connecting nails (5);
wherein the separation plane of the first split connection (3) and the second split connection (4) is far away from the concentrated load loading point.
2. The split type butt connection structure according to claim 1, wherein the metal machining joint (1) is sequentially divided into a first region, a second region, and a third region in a direction perpendicular to a concentrated load application direction, the concentrated load application point is located in the first region, and a separation plane of the first split type connection member (3) and the second split type connection member (4) is located in the third region.
3. The split type butt connection structure according to claim 2, wherein the separation plane of the first split type connection member (3) and the second split type connection member (4) is located at 80% of the entire length perpendicular to the concentrated load loading direction.
4. The split butt joint structure according to claim 1, wherein a separation gap δ of the separation plane is 2 mm.
5. The split type butt joint structure according to claim 1, wherein the thickness of the end of the first split type connector (3) connected with the metal machining joint (1) is larger than that of the end connected with the composite rib (2);
the thickness of one end of the second split type connecting piece (4) connected with the metal machining joint (1) is larger than that of one end connected with the composite rib (2).
6. The split type butt joint connection structure according to claim 1, wherein a bead is provided on each of the metal machining joint (1), the composite rib (2), the first split type connection member (3), and the second split type connection member (4).
7. The split type butting connection structure according to claim 6,
the thickness of the edge strip at one end of the first split type connecting piece (3) connected with the metal machining joint (1) is larger than that of the edge strip at one end connected with the composite rib (2);
the thickness of the edge strip at one end of the second split connecting piece (4) connected with the metal machining joint (1) is larger than that of the edge strip at one end of the second split connecting piece connected with the composite rib (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122160818.8U CN215865785U (en) | 2021-09-08 | 2021-09-08 | Split type butt joint connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122160818.8U CN215865785U (en) | 2021-09-08 | 2021-09-08 | Split type butt joint connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215865785U true CN215865785U (en) | 2022-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122160818.8U Active CN215865785U (en) | 2021-09-08 | 2021-09-08 | Split type butt joint connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215865785U (en) |
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2021
- 2021-09-08 CN CN202122160818.8U patent/CN215865785U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Maoliang Inventor after: Han Sicong Inventor after: Wang Zhigang Inventor after: Li Chi Inventor before: Zheng Maoliang Inventor before: Han Sicong Inventor before: Li Chi |
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| CB03 | Change of inventor or designer information |