Water scooping device mounting port frame and water-based fire extinguishing aircraft

Abstract

The application provides a water suction device installation port frame and a water extinguishing airplane. The water suction device installation port frame comprises a main body port frame (10), transverse corner bars (11) are arranged on four corners of the main body port frame (10) along a water suction direction, and the main body port frame (10) is provided with an opening (100) in the center, wherein the opening (100) is shaped as a water suction pipeline elbow area designed according to the shape of a water suction pipeline. An inner edge strip (102) is arranged on the outer edge of the top of the opening (100), and an outer edge strip (101) is arranged on the outer edge of the bottom of the opening (100). The application has high structural efficiency, is convenient to install, and has reasonable force transmission design.

Description

Technical Field

[0001] This invention relates to the field of seaplane hull structure design, specifically to a water intake device mounting frame and a seaplane for firefighting. Background Technology

[0002] To enable seaplanes to quickly collect water while gliding on the water surface, a water-collecting device and corresponding water-collecting passage are required on the hull. To solve this problem, a reinforcing structure needs to be provided inside the aircraft to install the water-collecting device; at the same time, holes need to be made in the hull skin to provide water-collecting channels. These channels may interrupt the original continuous stringer structure, thereby disrupting the continuity of force transmission in the longitudinal components of the aircraft. Summary of the Invention

[0003] The purpose of this invention is to provide a water-drawing device mounting frame and a seaplane for firefighting. This invention features high structural efficiency, convenient installation, and a rational force transmission design.

[0004] Technical solution. A water-drawing device mounting frame includes a main frame, with transverse corner members at the four corners along the water-drawing direction, and an opening at the center of the main frame. The shape of the opening is a bend in the water-drawing pipe designed according to its shape. An inner edge strip is provided on the outer edge of the top of the opening, and an outer edge strip is provided on the outer edge of the bottom of the opening.

[0005] In the aforementioned water-drawing device mounting frame, a longitudinal angle member is provided between two opposite transverse angle members.

[0006] In the aforementioned water-drawing device mounting frame, the longitudinal and transverse angle members are connected by connectors.

[0007] In the aforementioned water-drawing device mounting frame, the longitudinal angle member is a three-sided angle box structure, and the connector is a T-shaped structure.

[0008] In the aforementioned water-drawing device mounting frame, the four corners of the main frame are provided with outward extension angles in the vertical direction of water drawing.

[0009] In the aforementioned water-drawing device mounting frame, the main frame has a drain outlet near the root of the rounded corner of the outer edge strip.

[0010] The aforementioned water-drawing device is installed in the frame, and the wall of the opening has a C-shaped cross-section along the axial direction, which is an integrally machined structure.

[0011] In the aforementioned water-drawing device mounting frame, the drain outlet has a cross-section of a circle with a diameter of not less than 9.5 mm.

[0012] The aforementioned water-drawing device is installed in the frame, and the main frame is made of aluminum alloy.

[0013] A seaplane firefighting aircraft includes the aforementioned mounting frame, which is connected to the flange of the terminal water intake pipeline via an inner edge strip, and to the water intake device via an outer edge strip. The mounting frame is connected to the inner surface of the seaplane bottom skin via a transverse angle bracket. The opening of the mounting frame constitutes the middle section water intake pipeline, and the opening on the water intake device constitutes the initial section water intake pipeline. The initial, middle, and terminal water intake pipelines are combined to form the entire water intake pipeline of the seaplane firefighting aircraft.

[0014] Beneficial effects: This invention provides a mounting frame structure that can be used as a support structure for the water-drawing device of a seaplane firefighting aircraft. It also serves as a reinforcing structure after the skin is perforated, and as a transition piece connecting the internal water-drawing pipe and the water-drawing device. One structure achieves multiple functions and uses, with high structural efficiency, convenient installation, and reasonable force transmission design.

[0015] The water-drawing device mounting frame provided by this invention can simultaneously provide a mounting carrier for the water-drawing device and also serve as an installation interface for the water-drawing pipeline, providing a partial pipeline channel. It has high structural efficiency and is convenient for installation and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation of the mounting frame, water-drawing device, and water-drawing pipe according to the present invention.

[0017] Figure 2 yes Figure 1 A schematic diagram showing the structural positional relationship of the water-drawing device;

[0018] Figure 3 This is a schematic diagram of the main structure of the mounting frame;

[0019] Figure 4 This is a schematic diagram of the main frame structure;

[0020] Figure 5 yes Figure 4 Sectional view of AA. Detailed Implementation

[0021] In the following detailed description of preferred embodiments, reference will be made to the accompanying drawings, which form part of this invention. The accompanying drawings illustrate specific embodiments by way of example that enable the implementation of the invention. These embodiments are not intended to be exhaustive of all embodiments according to the invention. It will be understood that other embodiments may be utilized, and structural or logical modifications may be made, without departing from the scope of the invention. Therefore, the following detailed description is not restrictive, and the scope of the invention is defined by the appended claims.

[0022] In this invention, it should be understood that terms such as “inner,” “outer,” “lateral,” “longitudinal,” “bottom,” and “upper” that indicate orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of facilitating the description of this invention and simplifying the description, and are not intended to indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0023] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0024] like Figure 1 The diagram shows the installation of the water-drawing device frame 1, the water-drawing device 2, and the final water-drawing pipe 3. Figure 2 Further shown Figure 1 The positional relationship between the installation frame 1 of the middle water intake device, the water intake device 2, and the terminal water intake pipe 3; Figure 3 It shows Figure 1 The main structure of frame structure 1 Figure 4 The main body frame structure 10 of the water-drawing device structure 2 is shown. Figure 5 It shows Figure 4 Sectional view of AA.

[0025] Specifically, the mounting frame 1 is a modular frame structure, which is installed on the inner surface of the bottom skin of the seaplane for waterborne firefighting. Considering the structural connection requirements and manufacturing process, a segmented modular structure is adopted, which includes: the main frame 10, multiple horizontal angle members 11, vertical angle members 12, and connectors 13.

[0026] like Figure 3 , 4 As shown, the main frame 10 is a machined, "well"-shaped structure with transverse angle members 11 connected laterally (in the water-drawing direction) and longitudinally extending angle members 104. The longitudinal angle members 12 are three-sided corner box structures, and the connectors 13 are T-shaped structures. The two transverse angle members 11 are connected by the longitudinal angle members 12 and the connectors 13, forming a small frame in some areas for the actuating cylinder of the water-drawing device to pass through. After the water-drawing channel breaks the hull girder, the extending angles 104 connect to the girder joint / girder to transfer the axial load of the girder; the transverse angle members 11 overlap with adjacent longitudinal members such as girder and beams, providing lateral support for the frame structure.

[0027] like Figure 2As shown, the water-drawing device 2 is located on the outer surface of the hull bottom skin and is bolted to the outer edge strip 101 of the water-drawing device mounting frame 1. The water-drawing device mounting frame 1 is connected to the flange 30 of the upper end water-drawing pipe 3 via the inner edge strip 102 of the main frame 10. To improve assembly processability and ensure watertightness after assembly, the connection mating surface is designed as a plane. After connection, the opening 201 of the water-drawing device 2 is aligned with the opening 100 of the main frame 10 and the end water-drawing pipe 3 to form a complete water-drawing passage.

[0028] The opening 100 of the main frame 10 serves as a turning transition zone for the water intake passage. After entering from the water intake device, the water flow changes direction here before entering the water tank. The turning point at the opening 100 of the main frame 10 helps to transfer the lateral load generated by the change in water flow to the bottom skin of the ship via the water intake device mounting frame 1. The surface of the opening 100 is designed according to the shape of the water intake pipe, with its surface at a certain angle to the bottom surface. The cross-section of the opening 100 of the main frame 10 has a C-shaped cross-section. Considering both machining process and weight reduction, the acute angle side of the opening 100 cross-section has unequal thickness, while the remaining areas have equal thickness. The height x of the unequal thickness area is related to the minimum tool diameter d and the maximum depth H of the side feed direction of the part, and the relationship is generally: x = d + (1~3) mm, H ≯ 5d.

[0029] To prevent water accumulation, a drain outlet 103 with a cross-sectional diameter of not less than 9.5 mm is provided at the root of the rounded corner of the outer edge strip 101 near the main frame 10.

[0030] Regarding the water-drawing device mounting frame 1 disclosed in the above embodiments, those skilled in the art can understand that the uneven thickness of the cross section at the opening 100 is due to the fact that after the opening 100 is designed according to the shape of the water-drawing pipe, the side near the outer edge strip 101 is an acute angle area, and it is necessary to consider the local material accumulation caused by processing, and make a slight compromise to the machining process.

[0031] Regarding the water-drawing device mounting frame 1 disclosed in the above embodiments, those skilled in the art will understand that the innermost bottom angle at the root of the outward extension angle 104 of the main body frame 10 is relatively large. This is because when machining the main body frame 10 laterally into the cavity, the cutting tool needs to have a certain rigidity, and this bottom angle is determined by the minimum cutting tool radius. Reducing the outermost bottom angle by changing the cutting tool's machining direction is to meet the requirements for the arrangement of fasteners connecting the outward extension angle 104 to the stringer, while also minimizing the size of the outer edge strip 101 at the outward extension angle 104, thus reducing weight.

[0032] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A waterborne firefighting aircraft, characterized in that, The system includes an installation frame, which is connected to the flange of the final water intake pipeline via an inner edge strip. The installation frame is connected to the water intake device via an outer edge strip. The installation frame is connected to the inner surface of the bottom skin of the seaplane via a transverse angle bracket. The opening of the installation frame forms the middle section of the water intake pipeline, and the opening on the water intake device forms the initial section of the water intake pipeline. The initial, middle, and final sections of the water intake pipeline are combined to form the entire water intake pipeline of the seaplane. The mounting frame includes a main frame, with horizontal corner members at the four corners along the water intake direction. The main frame has an opening at its center, the shape of which is a bend in the water intake pipe designed according to its shape. The top edge of the opening has an inner edge strip, and the bottom edge of the opening has an outer edge strip. The four corners of the main frame have outward protrusions in the vertical direction of water intake; After the water intake channel breaks the bottom truss of the water-fighting aircraft, the outward extension angle is connected to the truss joint / truss; the transverse angle members are respectively lapped on the adjacent longitudinal members such as trusses and beams.

2. The seaplane for firefighting according to claim 1, characterized in that: A longitudinal angle member is provided between two opposite transverse angle members.

3. The seaplane for firefighting according to claim 2, characterized in that: The longitudinal and transverse angle members are connected by connectors.

4. The seaplane for firefighting according to claim 3, characterized in that: The longitudinal angle member is a three-sided angle box structure, and the connector is a T-shaped structure.

5. The seaplane for firefighting according to claim 1, characterized in that: The main body frame has a drainage outlet near the base of the rounded corner of the outer edge strip.

6. The seaplane for firefighting according to claim 1, characterized in that: The opening wall has a C-shaped cross-section along the axial direction, and is an integrally machined structure.

7. The seaplane for firefighting according to claim 5, characterized in that: The drain outlet has a cross-section of a circle with a diameter of not less than 9.5 mm.

8. The seaplane for firefighting according to claim 1, characterized in that: The main frame is made of aluminum alloy.

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