Keel beam upper wall plate trepanning protection cover plate

Abstract

A keel beam upper wall plate trepanning protection cover plate comprises a cover plate body, the top face of the cover plate body is integrally connected with an outer boss, and a groove is formed in the circumferential face of the outer boss. The utility model discloses simple structure, but practicality is strong, can accomplish the protection to different open pore, provide the operating platform for the worker, has avoided the peripheral interference of open pore simultaneously, the groove on the outer boss can be used for the worker to carry out the unfastening at the arbitrary position, does not compress the assembly space of worker, simple structure, convenient operation, economical efficiency. And the risk that redundant parts fall into the aircraft is avoided.

Description

Technical Field

[0001] The utility model relates to the field of aircraft manufacturing, in particular to a protection cover plate for an opening on the upper wall plate of a keel beam. Background Art

[0002] In the final assembly station of the middle fuselage of a large aircraft, openings of various shapes are provided on the upper wall plate of the keel beam. The openings are generally large. If the openings are not covered during the assembly process, small parts such as screws used in the assembly may fall into the interior of the aircraft, increasing the flight risk of the aircraft. The existing protection cover plate for the opening on the upper wall plate needs to be connected to the cover plate with a handle and screws, but the height of the handle hinders the assembly work of workers, compresses the assembly space of workers, is not convenient for the operation of workers, and moreover, the handle and screws increase the risk of foreign objects falling into the interior of the aircraft. Summary of the Invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides a protection cover plate for an opening on the upper wall plate of a keel beam.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A protection cover plate for an opening on the upper wall plate of a keel beam, comprising a cover plate body. An outer convex platform is integrally connected to the top surface of the cover plate body, and a groove is provided on the circumferential surface of the outer convex platform.

[0006] A convenient installation chamfer is provided at the bottom edge of the cover plate body.

[0007] The diameter of the solid part left after the groove is provided on the outer convex platform is larger than the diameter of the cover plate body.

[0008] The shape of the cover plate body is any one of a circular shape, an elliptical shape, and a polygonal shape.

[0009] The cover plate body and the outer convex platform are made of polyurethane.

[0010] The beneficial effects of the utility model are as follows: The structure of the utility model is simple, but the practicability is strong. It can complete the protection of different openings, provide an operation platform for workers, and avoid the peripheral interference of the openings at the same time. The groove on the outer convex platform can be used by workers to perform buckling and unloading at any position, without compressing the assembly space of workers. The structure is simple and there is no risk of redundant parts falling into the interior of the aircraft. Description of the Drawings

[0011] Figure 1 It is a perspective view of the utility model in a circular shape;

[0012] Figure 2 It is a front view of the utility model in a circular shape;

[0013] In the figure: 1 - Cover plate body; 2 - Outer convex platform; 3 - Groove; 4 - Convenient installation chamfer;

[0014] The following will be described in detail with reference to the accompanying drawings in conjunction with the embodiments of the present invention. Specific embodiments

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] A hole protection cover plate for the upper wall plate of a keel beam, comprising a cover plate body 1, an outer convex platform 2 is integrally connected to the top surface of the cover plate body 1, and a groove 3 is provided on the circumferential surface of the outer convex platform 2.

[0017] A convenient installation chamfer 4 is provided at the bottom edge of the cover plate body 1, and the convenient installation chamfer 4 facilitates the smooth insertion of the cover plate body 1 into the hole.

[0018] The diameter of the solid part remaining after the groove 3 is provided on the outer convex platform 2 is greater than the diameter of the cover plate body 1.

[0019] The shape of the cover plate body 1 is any one of a circular shape, an oval shape, and a polygonal shape, which can match the shape of the hole on the upper wall plate.

[0020] The cover plate body 1 and the outer convex platform 2 are made of polyurethane.

[0021] Example 1, select a polyurethane plate and process it into an oval protection cover plate with dimensions of 230mm * 210mm * 25mm for reserve.

[0022] During application, select a protection cover plate that matches the shape of the hole on the upper wall plate of the keel beam, embed the cover plate body 1 at the hole, the outer convex platform 2 on the top surface of the cover plate body 1 is above the hole. When removing the protection cover plate, the worker holds the groove 3 of the outer convex platform 2 and lifts the cover plate body 1, then the protection cover plate is removed from the hole on the upper wall plate.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In the present utility model, unless otherwise clearly specified and limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The present utility model has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A protection cover plate for the opening on the upper wall panel of a keel beam, characterized in that, It includes a cover plate body (1), and an outer convex platform (2) is integrally connected to the top surface of the cover plate body (1), and a groove (3) is provided on the circumferential surface of the outer convex platform (2).

2. The opening protection cover plate for the upper wall panel of the keel beam according to claim 1, wherein A convenient installation chamfer (4) is provided at the bottom edge of the cover plate body (1).

3. A protection cover plate for the opening on the upper wall panel of the keel beam according to claim 2, characterized in that, The diameter of the solid part left after the groove (3) is provided on the outer convex platform (2) is larger than the diameter of the cover plate body (1).

4. A protective cover plate for the opening on the upper wall plate of the keel beam according to claim 2, characterized in that The shape of the cover plate body (1) is any one of a circular shape, an elliptical shape, and a polygonal shape.

5. A protection cover plate for the opening on the upper wall panel of a keel beam according to claim 4, characterized in that, The cover plate body (1) and the outer convex platform (2) are made of polyurethane.

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