Glue joint repair part
By using adhesive-bonded repair parts on aircraft components, the problem of increased weight caused by traditional repair methods has been solved, achieving uniform stress distribution and lightweight structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional methods of repairing damaged aircraft parts increase weight and create surface bulges, failing to effectively reduce structural weight and improve stress distribution.
The adhesive repair component includes a base plate, stepped patch, and adhesive layer. By creating a damaged circular groove on the base plate and bonding the stepped patch to the adhesive layer, the adhesive area is increased and the stress distribution is optimized.
It achieves uniform stress distribution on the adhesive surface, reduces structural weight by 18%, lowers maintenance costs by 7%, and improves the fit between the repaired parts and the theoretical shape.
Smart Images
Figure CN224029246U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of structural strength analysis, and particularly relates to a glue joint repair piece. BACKGROUND
[0002] After the surface of a component of an airplane is damaged, for example, cracks, notches and the like, in order to avoid further damage to the damage position, the damage position needs to be repaired under certain conditions. A traditional repairing method is to cut off the damaged position, drill a hole and then install a patch in the hole after cutting off the damaged position by using a bolt fastener. This method increases the weight and makes the surface of the position protrude. CONTENT OF THE UTILITY MODEL
[0003] In order to solve the above problems, the application provides a glue joint repair piece, which comprises:
[0004] a parent plate, a stepped patch and a glue layer.
[0005] A damage circular groove is arranged at the damage position of the parent plate, and a slope surface is formed between the groove opening and the groove bottom of the damage circular groove, and a stepped surface is formed on the slope surface.
[0006] One surface of the stepped patch is a plane, and the other surface has a convex platform inserted into the damage circular groove, the convex platform has a stepped surface matched with the stepped surface of the circular groove, and the glue layer is bonded between the convex platform and the circular groove.
[0007] Preferably, after being installed in the damage circular groove, the plane of the stepped patch is flush with the surface of the parent plate.
[0008] Preferably, the glue joint repair piece further comprises a plane patch, the diameter of the plane patch is greater than that of the plane of the stepped patch, the plane patch is concentrically bonded on the plane of the stepped patch, and the plane patch covers the joint between the stepped patch and the damage circular groove.
[0009] Preferably, the stepped surface of the damage circular groove and the stepped surface of the stepped patch comprise a circular ring stepped surface with a gradually changing height.
[0010] Preferably, the circular ring stepped surface comprises a ring surface parallel to the surface of the parent plate and a column surface perpendicular to the ring surface.
[0011] Preferably, the material of the parent plate is the same as that of the stepped patch.
[0012] The advantages of the application include: the glue joint area of the parent plate and the patch is increased, the symmetry of the patch is good, the stress distribution of the glue joint surface is uniform, the interlayer structure stress is effectively reduced, the structure weight is greatly reduced, and the structure shape is in good conformity with the theoretical shape. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The application is a preferred embodiment of a glue joint repair piece. DETAILED DESCRIPTION
[0014] For the purpose of making the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments of the present application will be described in more details below in combination with the drawings in the embodiments of the present application. In the drawings, the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in details below in combination with the drawings.
[0015] As shown in Figure 1 The present application provides a cementing repair piece, comprising:
[0016] a mother plate 1, a stepped patch 2 and a cementing layer 4;
[0017] A damage circular groove is formed at the damage position of the mother plate 1, and a slope surface is formed between the groove opening and the groove bottom of the damage circular groove, and a stepped surface is formed on the slope surface;
[0018] One surface of the stepped patch 2 is a plane, and the other surface has a convex platform inserted into the damage circular groove, and the convex platform has a stepped surface matched with the stepped surface of the circular groove, and the cementing layer 4 is bonded between the convex platform and the circular groove.
[0019] In some optional embodiments, after being installed in the damage circular groove, the plane of the stepped patch 2 is flush with the surface of the mother plate 1.
[0020] In some optional embodiments, a planar patch 3 is further included, the diameter of the planar patch 3 is larger than that of the plane of the stepped patch 2, the planar patch 3 is concentrically pasted on the plane of the stepped patch 2, and the planar patch 3 covers the joint between the stepped patch 2 and the damage circular groove.
[0021] In some optional embodiments, the stepped surface of the damage circular groove and the stepped patch 2 comprises a circular ring stepped surface with a gradually changing height.
[0022] In some optional embodiments, the circular ring stepped surface comprises a ring surface parallel to the surface of the mother plate 1 and a cylindrical surface perpendicular to the ring surface.
[0023] In some optional embodiments, the material of the mother plate 1 is the same as that of the stepped patch 2.
[0024] The step lap joint repair test piece has uniform shear stress distribution of the glue layer on the glue joint surface, improves the glue joint strength, reduces the parent body weight by 18% and reduces the repair cost by 7% compared with the traditional repair mode, and the theoretical shape of the test piece is well consistent with the structural shape.
[0025] Advantages of the application include: increasing the glue joint area of the parent body and the patch, good symmetry of the patch layer, uniform stress distribution of the glue joint surface, effectively reducing the interlayer structure stress, greatly reducing the structure weight, and good consistency of the structural shape and the theoretical shape.
[0026] The above is only a specific embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.
Claims
1. A type of adhesive-bonded repair component, characterized in that, include: Motherboard (1), stepped patch (2) and adhesive layer (4); A damage groove is provided at the damaged location of the mother plate (1), and a slope is formed between the groove opening and the groove bottom, and a step surface is formed on the slope. The stepped patch (2) has a flat surface on one side and a boss on the other side that is inserted into the damaged circular groove. The boss has a stepped surface that fits into the stepped surface of the circular groove. The adhesive layer (4) is bonded between the boss and the circular groove.
2. The adhesive-bonded repair part as described in claim 1, characterized in that, After being installed in the damaged circular groove, the plane of the stepped patch (2) is flush with the surface of the mother plate (1).
3. The adhesive-bonded repair part as described in claim 1, characterized in that, It also includes a planar patch (3), the diameter of which is larger than the diameter of the plane of the stepped patch (2). The planar patch (3) is concentrically pasted on the plane of the stepped patch (2), and the planar patch (3) covers the joint between the stepped patch (2) and the damaged circular groove.
4. The adhesive-bonded repair part as described in claim 1, characterized in that, The stepped surface of the damaged circular groove and stepped patch (2) includes a circular stepped surface with gradually changing height.
5. The adhesive-bonded repair part as described in claim 4, characterized in that, The annular stepped surface includes an annular surface parallel to the surface of the mother plate (1) and a cylindrical surface perpendicular to the annular surface.
6. The adhesive-bonded repair part as described in claim 1, characterized in that, The mother plate (1) and the stepped patch (2) are made of the same material.