A sealing structure and fastening method with preset clearance
A technology of sealing structure and preset gap, which is applied in the direction of chord/longeron, wing, transportation and packaging, etc. It can solve the problems that the gap is not controlled through the structure, and the drilling accuracy cannot be guaranteed, so as to achieve the effect of ensuring accuracy
Active Publication Date: 2021-06-01
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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Problems solved by technology
However, the design of the sealing corners of the existing wing sealing ribs usually considers the sealing structure of the metal wall plate and the metal sealing ribs. The commonly used design schemes are as follows: figure 1 As shown, the gap between the seal corner piece and the stringer is not controlled by the structure
The existing technical scheme first makes the initial hole in the state of the wing rib, and then drills the final hole together with the wing rib and the sealing angle piece after the wing rib is put on the shelf. Since the sealing angle piece can move left and right, the drilling accuracy cannot be guaranteed.
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[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0026] Such as figure 2 As shown, the embodiment of the present disclosure discloses a sealing structure with a preset gap, and the sealing structure with a preset gap includes: a fixed structure and an auxiliary structure;
[0027] Wherein, the fixing structure is used to compress and limit the position of the part to be positioned, and realize the final hole on the surface of the part to be positioned;
[0028] The auxiliary structure is used to assist the fixed structure to assist in limiting the position of the part to be positioned;
[0029] Projections for preset gaps are provided on the side walls of the end faces where the fixing structure and the auxiliary structure cooperate with each other.
[0030] According to an embodiment of the present disclosure, the fixing structure includes a fixing body, one end of the fixing body is pro...
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The present invention relates to a sealing structure with a preset gap when a typical composite material wall plate is connected to a metal sealing rib, and the sealing structure with a preset gap includes: a fixed structure and an auxiliary structure; wherein, the fixed structure is used It is used to compress and limit the parts to be positioned, and to realize the final hole on the surface of the parts to be positioned; the auxiliary structure is used to assist the fixed structure to assist in the positioning of the parts to be positioned; the fixed structure and the auxiliary Adjusting projections for preset gaps are provided on the side walls of the end faces of the structures that cooperate with each other. Due to the adoption of the above technical scheme, the present invention can ensure the accuracy of drilling and assembly by adjusting the thickness of the preset thickness adjustment protrusions on the working surface of the sealing structure according to the requirements; gap; the sealing corner piece is made of glass fiber material, which is lighter than the aluminum alloy material structure, and meets the lightning protection design requirements between the composite long stringer and the metal wing rib.
Description
technical field [0001] The invention relates to a sealing structure and a fastening method for a preset gap when a typical composite material wall plate is connected with a metal sealing wing rib. Background technique [0002] Wing ribs are an important part of the wing. The wing rib is located in the wing box of the aircraft wing, and the wing rib is connected with the upper and lower wall panels, as well as the front and rear beams. The main purpose is to support the skin to maintain the aerodynamic shape and enhance the stability of the panel, spread the load to the wing box, provide support for the system piping, etc. The rib flange connects the rib and the wall plate and mainly bears tensile and shear loads as well as fatigue loads. The wing fuel tank is divided into central wing fuel tank, fuel collecting tank, outer wing fuel tank and overflow fuel tank through the sealing rib, so the sealing of the sealing rib is extremely important for the wing fuel tank. However...
Claims
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IPC IPC(8): B64C3/18
CPCB64C3/185B64C3/187
Inventor 彭志琦周俊孙见卓白鸿博石林李同肖志鹏王栋刘传军
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC