Split riveting combined type waterproof stamping air inlet pipeline

Abstract

The utility model belongs to the technical field of aircraft environment control, and relates to a split riveting combined type waterproof stamping air inlet pipeline which comprises a stamping air inlet base, the stamping air inlet base is connected with an aircraft body, and a riveting combined stamping air inlet pipeline is connected to the stamping air inlet base. A stamping transition pipe is inserted into the front end of the riveting combination stamping air inlet pipeline, and waterproof butt straps are arranged on the front side and the rear side of the stamping air inlet base correspondingly and connected with an aircraft body. The problem of fatigue fracture caused by welding deformation is solved, the service life of the stamping air inlet pipeline is prolonged, and the reliability of the stamping air inlet pipeline is improved.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft environmental control technology and relates to a split riveted assembly waterproof stamped air intake pipe. Background Technology

[0002] Currently, the ram air intake ducts used in aircraft are assembled by butt welding, resulting in significant welding deformation before docking with the fuselage structure. During connection, this welding deformation creates substantial installation stress at the mounting points. Over time, fatigue cracks gradually appear in the welds, deepening and widening with use. Furthermore, the relatively low strength of the welding materials causes cracks to develop within the ram air intake duct itself, in addition to weld fracture. Ultimately, this leads to ram air intake duct breakage, significantly reducing the ram air intake volume and causing insufficient cooling capacity in the aircraft's environmental control system, failing to meet the cooling needs of the crew and electronic equipment. Additionally, the difficult location of the ram air intake duct makes repair challenging after damage. Utility Model Content

[0003] The purpose of this utility model is:

[0004] A modular, riveted, waterproof stamped air intake pipe with a base and small deformation is proposed to solve the fatigue fracture problem caused by welding deformation and improve the service life and reliability of the stamped air intake pipe.

[0005] The technical solution of this utility model:

[0006] A split-type riveted composite waterproof stamped air intake pipe includes a stamped air intake base connected to the aircraft body. A riveted composite stamped air intake pipe is connected to the stamped air intake base. A stamped transition pipe is inserted into the front end of the riveted composite stamped air intake pipe. Waterproof mounting plates are respectively provided on the front and rear sides of the stamped air intake base, and the waterproof mounting plates are connected to the aircraft body.

[0007] Furthermore, the stamping air inlet base is designed according to the theoretical shape of stamping air inlet and is formed by machining.

[0008] Furthermore, the waterproof panel is divided into front and rear waterproof panels, which are formed by bending sheet metal and fit closely to the machine body structure.

[0009] Furthermore, the riveted combined stamped air intake pipe is composed of four parts: the front side wall panel, the outer side wall panel, the rear side wall panel, and the inner side wall panel.

[0010] Furthermore, the four sheet metal panels are assembled by riveting.

[0011] Furthermore, the riveted combined stamped air intake pipe is connected to the machine body structure using a riveting-screw connection method.

[0012] The beneficial effects of this utility model are:

[0013] This invention proposes a split-type riveted composite waterproof stamped air intake pipe through special manufacturing and connection methods, avoiding the risks of large deformation and low strength caused by welding. The transition pipe adopts a plug-in connection instead of a screw connection, reducing installation space requirements and installation stress and deformation. The connection of the waterproof mounting plate avoids the problem of water ingress into the aircraft air intake. While improving the strength of the stamped air intake pipe, it also improves its service life and reliability.

[0014] This invention can reduce installation stress and deformation during aircraft installation, while simultaneously improving the structural strength of the ram air intake duct and enhancing the aircraft's waterproofing capabilities. It can be applied to ram air intake installations on ribs, eliminating the need for maintenance of the ram air intake duct throughout the aircraft's lifespan. Attached Figure Description

[0015] Figure 1 This is a structural composition diagram of the present invention.

[0016] Attached reference numerals: 1—Front and rear waterproof cladding; 2—Stamped air inlet base; 3—Riveted combined stamped air inlet pipe; 4—Stamped transition pipe. Detailed Implementation

[0017] Example 1:

[0018] This utility model proposes a split riveted combined waterproof stamped air intake pipe, including a stamped air intake base 2, which is connected to the aircraft body. A riveted combined stamped air intake pipe 3 is connected to the stamped air intake base 2. A stamped transition pipe 4 is inserted into the front end of the riveted combined stamped air intake pipe 3. Waterproof mounting plates are respectively provided on the front and rear sides of the stamped air intake base 2, and the waterproof mounting plates are connected to the aircraft body.

[0019] In this embodiment, the stamped air inlet base 2 is machined according to the theoretical shape of the stamped air inlet, providing a solid and reliable installation and connection benchmark for the riveted combined stamped air inlet pipe 3.

[0020] In this embodiment, the waterproof panel is divided into front and rear sides, and is formed by bending sheet metal to fit and connect with the body structure. It fills the gap between the riveted and stamped air intake pipe 3 and the body structure to prevent rainwater and other corrosive liquids from entering the body and the aircraft air intake.

[0021] In this embodiment, the riveted combined stamped air intake pipe 3 is composed of four parts: a front side panel, an outer side panel, a rear side panel, and an inner side panel. The four sheet metal bending panels are assembled by riveting and connected to the machine body structure using a riveting-screw connection.

[0022] In this embodiment, the riveted combined stamped air intake pipe 3 is connected to the machine body structure by riveting-screw connection.

[0023] In this embodiment, the stamping transition pipe 4 is connected to the front-end stamping air intake pipe by a plug-in connection.

[0024] The stamped air intake pipe, constructed using special manufacturing and connection methods, avoids the risks of large deformation and low strength caused by welding. The stamped transition pipe 4 uses a plug-in connection instead of a screw connection, reducing installation space requirements and minimizing installation stress and deformation. Waterproof mounting plates prevent water ingress into the aircraft air intake. This design enhances both the strength and lifespan and reliability of the stamped air intake pipe.

[0025] Example 2:

[0026] like Figure 1 As shown, the present invention discloses a split riveted composite waterproof stamped air inlet pipe with small deformation and high strength and base, which includes front and rear waterproof plates 1, stamped air inlet base 2, riveted composite stamped air inlet pipe 3, and stamped transition pipe 4.

[0027] The stamped air inlet base 2 is a 2mm thick part made of structural plate by machining. It is connected and fixed to the machine body structure by riveting according to the design positioning, and serves as one of the references for the installation of the front and rear waterproof mounting plates 1 and the riveted combination stamped air inlet pipe 3.

[0028] The front and rear waterproof panels 1 are made of 1.5mm hard aluminum material. They are formed by bending the sheet metal according to the shape of the stamped air inlet base 2 and the body structure connected to it, and then connected and fixed by riveting.

[0029] The riveted assembly stamped air intake pipe 3 is formed by bending multiple thin plates of hard aluminum material according to the theoretical shape, and then riveted to the body structure and the stamped air intake base 1 in stages.

[0030] The stamped transition pipe 4 is connected to the riveted stamped air intake pipe 3 by plug-in connection. The 2mm rubber plate at the plug-in point compensates for the installation and seals the air passage.

[0031] The embodiments of the present invention disclose a split riveted assembly waterproof stamped air intake pipe with small deformation and high strength and base. Other changes can be made according to the present invention, such as canceling the waterproof form of the front and rear plates and replacing it with adhesive sealing for waterproofing, or changing the connection form of the stamped transition pipe to a flange connection, all of which are within the protection scope of the present invention.

Claims

1. A split-type riveted composite waterproof stamped air inlet pipe, characterized in that, It includes a stamped air inlet base, which is connected to the fuselage. A riveted combination stamped air inlet pipe is connected to the stamped air inlet base. A stamped transition pipe is inserted into the front end of the riveted combination stamped air inlet pipe. Waterproof plates are respectively provided on the front and rear sides of the stamped air inlet base, and the waterproof plates are connected to the aircraft fuselage.

2. The split-type riveted composite waterproof stamped air inlet pipe according to claim 1, characterized in that, The stamped air inlet base is designed according to the theoretical shape of stamped air inlet and is formed by machining.

3. The split-type riveted composite waterproof stamped air inlet pipe according to claim 1, characterized in that, The waterproof panel is divided into front and rear waterproof panels, which are formed by bending sheet metal and fit closely to the machine body structure.

4. The split-type riveted composite waterproof stamped air inlet pipe according to claim 1, characterized in that, The riveted combined stamped air intake pipe is composed of four parts: the front side panel, the outer side panel, the rear side panel, and the inner side panel.

5. The split-type riveted composite waterproof stamped air inlet pipe according to claim 4, characterized in that, The four sheet metal panels are assembled by riveting.

6. The split-type riveted composite waterproof stamped air inlet pipe according to claim 1, characterized in that, The riveted and stamped air intake pipe is connected to the machine body structure by riveting and screwing.

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