Conical cabin skin device

Abstract

The utility model provides a conical cabin skin device, which comprises a plurality of stringers which are longitudinally arranged along the inner wall of a conical cabin and are uniformly distributed along the circumferential direction of the conical cabin; the opening is formed in the conical cabin body between any two stringers and is used for personnel operation; and the transverse short purlins are arranged between the long purlins on the left side of the opening and between the long purlins on the right side of the opening. The device is simple in structure and can solve the problem of skin instability.

Description

Technical Field

[0001] The utility model relates to the field of skin structures, in particular to a conical cabin skin device. Background Art

[0002] When designing a conical cabin, the skin of the conical skin structure usually needs to be designed with an operation opening. The existence of the operation opening will weaken the strength of the surrounding structure, causing the conical skin to be prone to premature local structural instability, that is, the local structure is destroyed before the whole, reducing the bearing capacity of the overall conical skin structure.

[0003] In view of this, there is an urgent need to design a conical cabin skin device that can effectively alleviate local instability and has a simple structure. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a conical cabin skin device.

[0005] The utility model provides a conical cabin skin device, comprising: a long stringer, which is longitudinally arranged along the inner wall of the conical cabin, and a plurality of the long stringers are evenly distributed along the circumference of the conical cabin; an opening, which is arranged on the conical cabin between any two of the long stringers for personnel operation; and a transverse short stringer, which is arranged between the long stringers on the left side of the opening and close to the opening, and between the long stringers on the right side of the opening and close to the opening.

[0006] According to one embodiment of the utility model, the transverse short girder includes a first transverse short girder and a second transverse short girder, the first transverse short girder is arranged between the long girder near the two sides of the opening, the second transverse short girder is arranged between the long girder at a suitable distance from the opening along the longitudinal direction of the long girder and located on both sides of the opening, and the second transverse short girder is arranged close to the large end of the conical cabin.

[0007] According to one embodiment of the utility model, the long stringers distributed circumferentially from the opening to one side are successively the first left long stringer, the second left long stringer, and the third left long stringer, and the long stringers distributed circumferentially from the opening to the other side are successively the first right long stringer, the second right long stringer, and the third right long stringer.

[0008] According to an embodiment of the present invention, the first transverse short girder is divided into two, which are respectively arranged between the first left long girder and the second left long girder, and between the first right long girder and the second right long girder.

[0009] According to an embodiment of the present invention, the second transverse short girder is divided into two, which are respectively arranged between the first left long girder and the third left long girder, and between the first right long girder and the third right long girder.

[0010] According to an embodiment of the utility model, the conical cabin skin device further includes: corner pieces, which are arranged at the connection between the second transverse short girder and the second left long girder, and at the connection between the second transverse short girder and the second right long girder.

[0011] According to an embodiment of the utility model, the conical cabin skin device further comprises: a longitudinal short girder, a first end of which is connected to the second transverse short girder, and a second end of which extends in the longitudinal direction of the long girder away from the opening.

[0012] According to an embodiment of the present invention, the longitudinal short girder is divided into two, which are respectively arranged between the first left long girder and the second left long girder, and between the first right long girder and the second right long girder.

[0013] According to an embodiment of the present invention, the cross section of the longitudinal short stringer is T-shaped.

[0014] According to an embodiment of the present invention, the cross section of the first transverse short truss is L-shaped, and the cross section of the second transverse short truss is T-shaped.

[0015] The conical cabin skin device of the present application can eliminate the problem of skin instability by arranging long girders and transverse short girders on a conical cabin skin structure with an opening, and has a simple structure and enhances the rigidity of the part near the opening, thereby better meeting the bearing capacity requirements of the conical cabin skin.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 It is a schematic diagram of a conical cabin skin device according to an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of a conical cabin skin device according to another embodiment of the utility model;

[0020] Figure 3 It is a partial enlarged view of a conical cabin skin device according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 100-long girder, 101-first left long girder, 102-second left long girder, 103-third left long girder, 104-first right long girder, 105-second right long girder, 106-third right long girder, 200-opening, 300-transverse short girder, 301-first transverse short girder, 302-second transverse short girder, 400-corner piece, 500-longitudinal short girder. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0024] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0026] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be regarded as limiting. Similar terms represent similar elements throughout the description.

[0027] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0028] Figure 1 It is a schematic diagram of a conical cabin skin device according to an embodiment of the utility model; Figure 2 is a schematic diagram of a conical cabin skin device according to another embodiment of the utility model; Figure 3 It is a partial enlarged view of a conical cabin skin device according to an embodiment of the utility model.

[0029] like Figure 1 As shown, the utility model provides a conical cabin skin device, including: a long stringer 100, which is longitudinally arranged along the inner wall of the conical cabin, and a plurality of long strings 100 are evenly distributed along the circumference of the conical cabin; an opening 200, which is arranged on the conical cabin between any two long strings 100 for personnel operation; and a transverse short stringer 300, which is arranged between the long strings 100 on the left side of the opening 200 and between the long strings 100 on the right side of the opening 200.

[0030] The left side and the right side in the present application refer to the two sides of the opening 200 along the circumferential direction of the conical cabin.

[0031] Specifically, when the conical cabin skin is provided with an opening 200, when the linear buckling is calculated to 100%, the conical cabin is subjected to compression and the skin will be locally unstable near the opening 200. Therefore, it is necessary to provide vertical long girders 100 and transverse short girders 300 with a stabilizing function on the inner wall of the conical cabin skin to cooperate with each other to eliminate the problem of skin instability. Multiple vertical long girders 100 are evenly distributed along the circumference of the conical cabin, and combined with the transverse short girders 300 provided on both sides of the opening 200, the rigidity of the unstable part is enhanced, thereby meeting the bearing capacity requirements of the conical cabin skin. The combined reinforcement structure of the long girders 100 and the transverse short girders 300 can be connected by glue rivets and installed on the inner wall of the conical cabin skin.

[0032] The conical cabin skin device in this embodiment is light in weight and has a high structural efficiency. The long stringer 100 and the transverse short stringer 300 are simple to manufacture and easy to assemble, and can effectively delay the local instability of the skin structure. This structure is not only applicable to conical cabin skins, but also to other curved and flat skin structures.

[0033] like Figure 2 As shown, according to one embodiment of the present invention, the transverse short stringer 300 includes a first transverse short stringer 301 and a second transverse short stringer 302. The first transverse short stringer 301 is arranged between the long stringers 100 near the two sides of the opening 200, and the second transverse short stringer 302 is arranged between the long stringers 100 at a suitable distance from the opening 200 along the longitudinal direction of the long stringer 100 and located on both sides of the opening 200, and the second transverse short stringer 302 is arranged near the large end of the conical cabin.

[0034] According to one embodiment of the utility model, the long stringers 100 distributed circumferentially from the opening 200 to one side are sequentially a first left long stringer 101, a second left long stringer 102, and a third left long stringer 103, and the long stringers 100 distributed circumferentially from the opening 200 to the other side are sequentially a first right long stringer 104, a second right long stringer 105, and a third right long stringer 106.

[0035] According to an embodiment of the present invention, the first transverse short girder 301 is divided into two, which are respectively arranged between the first left long girder 101 and the second left long girder 102 , and between the first right long girder 104 and the second right long girder 105 .

[0036] According to an embodiment of the present invention, the second transverse short girder 302 is divided into two, which are respectively arranged between the first left long girder 101 and the third left long girder 103 , and between the first right long girder 104 and the third right long girder 106 .

[0037] like Figure 3 As shown, according to an embodiment of the present invention, the conical cabin skin device further includes: corner pieces 400, which are arranged at the connection between the second transverse short stringer 302 and the second left long stringer 102, and at the connection between the second transverse short stringer 302 and the second right long stringer 105.

[0038] According to an embodiment of the present invention, the conical cabin skin device further includes: a longitudinal short stringer 500 , a first end of which is connected to the second transverse short stringer 302 , and a second end of which extends in the longitudinal direction of the long stringer 100 away from the opening 200 .

[0039] According to an embodiment of the present invention, the longitudinal short stringer 500 is divided into two, which are respectively arranged between the first left long stringer 101 and the second left long stringer 102 , and between the first right long stringer 104 and the second right long stringer 105 .

[0040] According to an embodiment of the present invention, the cross section of the longitudinal short stringer 500 is T-shaped.

[0041] According to an embodiment of the present invention, the cross section of the first transverse short stringer 301 is L-shaped, and the cross section of the second transverse short stringer 302 is T-shaped.

[0042] In the specific operation, firstly, a linear buckling calculation is performed on the conical cabin, that is, when the finite element analysis reaches 100%, the priority instability area A is found, and short girders are arranged in the priority instability area A; the cross-section and span of the short girders are designed according to the severity of the instability. If the long girder 100 is unstable, a transverse short girder 300 spanning the long girder 100 needs to be arranged. If the instability area is only the skin, it is only necessary to arrange a transverse short girder 300 between two long girders 100.

[0043] In this way, it is detected that the position below the opening 200 is the position where serious instability occurs first, that is, the position close to the large end of the tapered cabin at a suitable distance from the opening 200 along the longitudinal direction of the long stringer 100, and the long stringer 100 at this position is also unstable. Therefore, two second transverse short stringers 302 are respectively arranged on both sides of this position, one is arranged between the first left long stringer 101 and the third left long stringer 103, and the other is arranged between the first right long stringer 104 and the third right long stringer 106. For example, the cross section of the second transverse short stringer 302 is a T-shaped section, and the thickness of the vertical side and the bottom side is 2mm.

[0044] In order to more effectively increase the local rigidity, the corner piece 400 may be provided at the intersection of the second transverse short girder 302 and the long girder 100, that is, the corner piece 400 may be provided at the connection between the second transverse short girder 302 and the second left long girder 102 and at the connection between the second transverse short girder 302 and the second right long girder 105. For example, the long girder 100 and the second transverse short girder 302 connected by the corner piece 400 form a "cross" structure.

[0045] Next, the linear buckling loading calculation is performed again to find the preferential instability region B, and slight instability is detected at the upper part of the opening 200 (i.e., near the opening and away from the large end relative to the second short girder). Two first transverse short girders 301 are respectively arranged at the positions of the long girder 100 on both sides of the opening 200, one of which is arranged between the first left long girder 101 and the second left long girder 102, and the other is arranged between the first right long girder 104 and the second right long girder 105. For example, the cross section of the first transverse short girder 301 is an L-shaped section, and the thickness of the vertical side and the bottom side is 2 mm.

[0046] Finite element analysis was performed again to find the priority instability area C. After analysis, serious instability occurred below the second transverse short girder 302 (near the large end of the conical cabin). Two longitudinal short girder 500 were extended longitudinally toward the large end of the conical cabin on the basis of the two second transverse short girder 302, one of which was arranged between the first left long girder 101 and the second left long girder 102, and the other was arranged between the first right long girder 104 and the second right long girder 105. For example, the cross section of the longitudinal short girder 500 is a T-shaped section, and the thickness of the vertical side and the bottom side is 2 mm.

[0047] The first transverse short girder 301, the second transverse short girder 302 and the longitudinal short girder 500 added in this embodiment and their arrangement can significantly improve the bearing capacity of the conical cabin skin structure. According to the finite element analysis, the conical cabin skin structure has no local instability. If the conical cabin skin structure still has local structural instability and damage in actual application, the finite element analysis can be repeated as required to find the instability area and continue to iterate until the bearing requirements are met.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A conical cabin skin device, characterized in that: include: A long stringer is longitudinally arranged along the inner wall of the conical cabin, and a plurality of the long stringers are evenly distributed along the circumference of the conical cabin; An opening is provided on the conical cabin between any two of the long stringers for personnel operation; A transverse short stringer, arranged between the long stringers on the left side of the opening and close to the opening, and between the long stringers on the right side of the opening and close to the opening; The transverse short girder includes a first transverse short girder and a second transverse short girder. The first transverse short girder is arranged between the long girder near the two sides of the opening. The second transverse short girder is arranged between the long girder at a suitable distance from the opening along the longitudinal direction of the long girder and located on both sides of the opening. The second transverse short girder is arranged close to the large end of the conical cabin.

2. The conical cabin skin device according to claim 1, characterized in that: The long stringers distributed circumferentially from the opening to one side are sequentially the first left long stringer, the second left long stringer, and the third left long stringer, and the long stringers distributed circumferentially from the opening to the other side are sequentially the first right long stringer, the second right long stringer, and the third right long stringer.

3. The conical cabin skin device according to claim 2, characterized in that: The first transverse short girder is divided into two, which are respectively arranged between the first left long girder and the second left long girder, and between the first right long girder and the second right long girder.

4. The conical cabin skin device according to claim 2, characterized in that: The second transverse short girder is divided into two, which are respectively arranged between the first left long girder and the third left long girder, and between the first right long girder and the third right long girder.

5. The conical cabin skin device according to claim 4, characterized in that: Also includes: Angle pieces are provided at the connection between the second transverse short girder and the second left long girder, and at the connection between the second transverse short girder and the second right long girder.

6. The conical cabin skin device according to claim 4, characterized in that: Also includes: A longitudinal short truss has a first end connected to the second transverse short truss and a second end extending in the longitudinal direction of the long truss away from the opening.

7. The conical cabin skin device according to claim 6, characterized in that: The longitudinal short girder is divided into two, which are respectively arranged between the first left long girder and the second left long girder, and between the first right long girder and the second right long girder.

8. The conical cabin skin device according to claim 6 or 7, characterized in that: The cross section of the longitudinal short stringer is T-shaped.

9. The conical cabin skin device according to any one of claims 1 to 7, characterized in that: The cross section of the first transverse short truss is L-shaped, and the cross section of the second transverse short truss is T-shaped.

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