Special-shaped section combined frame connecting structure of large seaplane

Abstract

The utility model discloses a large seaplane special-shaped section combination frame connecting structure which comprises an oblate section frame and a V-shaped frame, the V-shaped frame is connected to the lower portion of the oblate section frame, and a cavity area is defined by the V-shaped frame and the oblate section frame. A transverse combination beam capable of penetrating through the fuselage and being connected with a floor is arranged on the inner side of the joint of the V-shaped frame and the oblate section frame, trapezoidal cantilever beams are arranged on the two outer sides of the joint, the portion, on the lower side of the transverse combination beam, of the oblate section frame is an arc-shaped combination beam, and an opening is formed in the middle of the upper side of the transverse combination beam. The combined frame connecting structure is provided with the oblate section frame, the V-like frame, the transverse combined beam and the trapezoidal cantilever beam, can meet the connecting requirements of a pressurized cabin at the special position of a fuselage, an important connecting area of a wing body, a ship bottom structure, an operation floor and a main undercarriage cabin, can be used as a connecting and main force bearing structure of a complex interface, and is reasonable in structural distribution, light in weight and high in reliability. The assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft fuselage structure design, in particular to a large-scale seaplane special-shaped cross-section combined frame connection structure. Background Art

[0002] A certain large seaplane features a pressurized cabin within its fuselage. The rear end of the cabin is located mid-fuselage. This position is extremely unique, presenting not only a significant separation between major component design and process requirements but also complex connections and load-carrying relationships. The bottom is the ship's bottom structure, flanked by large, externally suspended main landing gear bays, and the top, a crucial wing-to-fuselage connection area with a unique cross-section. The center houses the operating floor. Consequently, this location presents complex connections and functions, resulting in heavy structure and low assembly efficiency. Currently, no known aircraft models have a pressurized cabin suitable for this mid-fuselage location, nor do they have a connection structure that matches these complex interfaces. A primary load-bearing connection structure is urgently needed to meet these requirements. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a large seaplane special-section combined frame connection structure that can meet the connection requirements of the pressurized cabin at a special position of the fuselage and the important connection area of the wing and body, the bottom structure, the operating floor, and the main landing gear compartment.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is as follows: a large seaplane special-section combination frame connection structure, including an oblate cross-section frame and a V-shaped frame, the V-shaped frame is connected to the lower part of the oblate cross-section frame and forms a cavity area with the oblate cross-section frame, and the inner side of the connection between the V-shaped frame and the oblate cross-section frame is provided with a transverse combination beam that can pass through the fuselage and be connected to the floor, and trapezoidal cantilever beams are provided on both outer sides of the connection, the oblate cross-section frame is an arc-shaped combination beam at the lower part of the transverse combination beam, and an opening is opened in the middle part of the upper side of the transverse combination beam.

[0005] Compared with the existing technology, the beneficial effects of the present invention are: the combined frame connection structure is provided with an oblate cross-section frame, a V-shaped frame, a transverse combined beam, and a trapezoidal cantilever beam, which can meet the connection requirements of the pressurized cabin at a special position of the fuselage and the important connection area of the wing body, the bottom structure, the operating floor, and the main landing gear compartment. It can serve as the connection and main load-bearing structure of complex interfaces, and the structure has a reasonable distribution, light weight, and is easy to assemble.

[0006] The above-mentioned large seaplane special-section combined frame connection structure, the operating floor includes a frame front treading floor, a frame rear treading floor and a frame front airtight floor, the transverse combined beam is flexibly connected to the frame front treading floor, the transverse combined beam is flexibly connected to the frame rear treading floor, and the transverse combined beam is rigidly connected to the frame front airtight floor.

[0007] In the above-mentioned large seaplane special-section combined frame connection structure, at the connection between the V-shaped frame and the oblate circular section frame, the upper end of the V-shaped frame, the outer end of the arc-shaped combined beam, the cantilever beam and the Y-shaped piece are combined into a fork-shaped structure.

[0008] In the above-mentioned large seaplane special-shaped cross-section combined frame connection structure, the V-shaped frame is composed of two symmetrically distributed L-shaped cross-section frames.

[0009] In the above-mentioned large seaplane special-section combined frame connection structure, the oblate-circular section frame is provided with a Z-section combined beam above the opening.

[0010] In the above-mentioned large seaplane special-section combined frame connection structure, the transverse combined beam is composed of a number of L-shaped corner boxes.

[0011] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of the combination frame connection structure of an embodiment of the utility model;

[0013] Figure 2 This is an axial view of the combined frame connection structure of an embodiment of the present utility model;

[0014] Figure 3 This is an axial view of an oblate cross-section frame according to an embodiment of the present invention;

[0015] Figure 4 This is an axial view of a V-shaped frame according to an embodiment of the present invention;

[0016] Figure 5 This is a partial structural diagram of the connection between the combination frame connection structure and the operating floor according to an embodiment of the utility model.

[0017] Explanation of the accompanying numbers: 100 oblate section frame, 110 transverse composite beam, 120 curved composite beam, 130 opening, 140 Z-section composite beam, 200 V-type frame, 210 cantilever beam, 220 L-section frame, 300 cavity area, 7 fuselage wall panel, 81 airtight floor, 82 stepping floor in front of frame, 83 stepping floor behind frame. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below. Figures 1 to 5An embodiment of the utility model provides a connection structure of a large seaplane special-shaped cross-section combination frame, including an oblate cross-section frame 100 and a V-shaped frame 200. The V-shaped frame 200 is connected to the lower part of the oblate cross-section frame 100 and forms a cavity area 300 with the oblate cross-section frame 100. The inner side of the connection between the V-shaped frame 200 and the oblate cross-section frame 100 is provided with a transverse combination beam 110 that can penetrate the fuselage wall panel 7 and be connected to the floor. Trapezoidal cantilever beams 210 are provided on both outer sides of the connection. The oblate cross-section frame 100 is an arc-shaped combination beam 120 at the lower part of the transverse combination beam 110, and an opening 130 is opened in the middle part of the upper side of the transverse combination beam 110. This composite frame connection structure, featuring an oblate cross-section frame 100, a V-shaped frame 200, a transverse composite beam 110, and a trapezoidal cantilever beam 210, meets the requirements for connecting the pressurized cabin at specific locations on the fuselage with key wing-body connection areas, the bottom structure, the operating floor, and the main landing gear compartment. It serves as both a connection and the primary load-bearing structure for complex interfaces. Its rationally distributed structure, light weight, and ease of assembly are also key. The hollow area 300 facilitates lower space connectivity while reducing the weight of the connection structure.

[0019] Further, refer to Figure 5 The operating floor includes a front treading floor 82, a rear treading floor 83, and a front airtight floor 81. The front airtight floor 81 and the front treading floor 82 are connected to the front of the combined frame structure, and the rear treading floor 83 is connected to the rear of the combined frame structure. An opening 130 is located between the front treading floor 82 and the rear treading floor 83. A transverse composite beam 110 is flexibly connected to the front treading floor 82, the rear treading floor 83, and the front airtight floor 81. This ensures both connection strength and load-bearing capacity, while also meeting assembly requirements. Furthermore, the V-shaped frame 200 is a structure with an overall shape similar to a V-shape. Its lower portion is V-shaped, and its upper portion has two upwardly extending structures to facilitate connection to the oblate cross-section frame 100. A cantilever beam 210 is connected to the outer sides of the two upwardly extending structures. At the connection between the V-shaped frame 200 and the oblate cross-section frame 100, the upper end of the V-shaped frame 200, the outer end of the arc-shaped composite beam 120, the cantilever beam 210 and the Y-shaped member extend in different directions to form a fork-shaped structure to meet the connection requirements of the boost frame. Figure 2 and Figure 3 The opening 130 is surrounded by door frame beams, vertical beams, transverse partitions, and auxiliary vertical beams to form the opening 130 and increase the structural strength of the opening 130. The oblate cross-section frame 100 is provided with a Z-section composite beam 140 above the opening 130. The Z-section composite beam 140 is arranged parallel to the transverse composite beam 110, and the transverse composite beam 110 is composed of a number of L-shaped corner boxes. Figure 4The V-shaped frame 200 is composed of two symmetrically distributed L-shaped cross-section frames 220. The cross-section of the L-shaped cross-section frame 220 along the width direction is L-shaped, and the L-shaped cross-section frame 220 is bent 135 degrees along the length direction. The two L-shaped cross-section frames 220 and the oblate cross-section frame 100 enclose a cavity with a special cross-section and have a certain width to meet the connection requirements.

[0020] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operated in a specific direction, and cannot be understood as a limitation on the present invention.

[0021] In the description of this utility model, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A large seaplane special-section combined frame connection structure, characterized in that: The invention comprises an oblate cross-section frame (100) and a V-shaped frame (200), wherein the V-shaped frame (200) is connected to the lower part of the oblate cross-section frame (100) and forms a cavity area (300) with the oblate cross-section frame (100), and a transverse composite beam (110) capable of penetrating the fuselage and being connected to the operating floor is provided on the inner side of the connection between the V-shaped frame (200) and the oblate cross-section frame (100), and trapezoidal cantilever beams (210) are provided on both outer sides of the connection, and the oblate cross-section frame (100) is provided with an arc-shaped composite beam (120) at the lower part of the transverse composite beam (110), and an opening (130) is provided in the middle part of the upper side of the transverse composite beam (110).

2. The large seaplane special-section combined frame connection structure according to claim 1, characterized in that: The operating floor comprises a frame front treading floor (82), a frame rear treading floor (83) and a frame front airtight floor (81); the transverse composite beam (110) is flexibly connected to the frame front treading floor (82); the transverse composite beam (110) is flexibly connected to the frame rear treading floor (83); and the transverse composite beam (110) is rigidly connected to the frame front airtight floor (81).

3. The large seaplane special-section combined frame connection structure according to claim 1, characterized in that: At the connection between the V-shaped frame (200) and the oblate cross-section frame (100), the upper end of the V-shaped frame (200), the outer end of the arc-shaped combined beam (120), the cantilever beam (210) and the Y-shaped member are combined into a fork-shaped structure.

4. The large seaplane special-section combined frame connection structure according to claim 1, characterized in that: The V-shaped frame (200) is composed of two symmetrically distributed L-shaped cross-section frames (220).

5. The large seaplane special-section combined frame connection structure according to claim 1, characterized in that: The oblate cross-section frame (100) is provided with a Z-section composite beam (140) above the opening (130).

6. The large seaplane special-section combined frame connection structure according to claim 1, characterized in that: The transverse composite beam (110) is composed of a plurality of L-shaped corner boxes.

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