A method of repairing an aluminum honeycomb floor

Abstract

This invention discloses a method for repairing aluminum honeycomb floors, comprising: detecting the collapse and pitting faults of the aluminum honeycomb floor in the passenger compartment of a rail transit vehicle, and obtaining the specific location of the fault; uniformly opening injection holes at the defect locations; using a needle-like tool to connect the aluminum honeycomb material at the collapsed locations, and then injecting high-toughness epoxy structural adhesive into the defect locations; after all collapsed areas are completely filled with high-toughness epoxy structural adhesive, leveling the surface of the aluminum honeycomb floor, and pasting flooring fabric of the same size as the openings at the injection holes, thus completing the repair of the aluminum honeycomb floor with collapsed or pitted faults. This method improves the repair efficiency by avoiding the removal of related interior decorations when repairing aluminum honeycomb floors, and avoids the additional flooring fabric welds required after replacing the entire aluminum honeycomb panel, thus ensuring the overall aesthetics.

Description

Technical Field

[0001] This invention relates to the field of rail transit vehicle floor repair technology, and more particularly to a method for repairing aluminum honeycomb floors. Background Technology

[0002] In the passenger compartments of rail transit vehicles, the floor structure often uses aluminum honeycomb flooring covered with a flooring fabric. During operation, passengers occasionally carry overweight items or sharp objects, causing impacts to the floor and resulting in collapses or dents in the aluminum honeycomb flooring. Additionally, during the production of the aluminum honeycomb flooring, occasional instances occur where the aluminum honeycomb cells are not perfectly bonded to the aluminum panels, leading to delamination or collapse of the aluminum honeycomb cells during use. These defects severely impact the normal operation of rail transit vehicles. The original solution to these problems required replacing the entire aluminum honeycomb flooring and the flooring fabric covering it.

[0003] Typically, in cases where aluminum honeycomb flooring has collapsed or sunken areas, all fasteners used for installation on the rail transit vehicle are removed. Any other interior components obstructing the view must also be completely removed. After removal, the aluminum honeycomb flooring and the floor covering it are removed, and a completely identical aluminum honeycomb flooring is installed in its place. Fasteners connecting it to the rail transit vehicle are then installed. After installation, the new floor covering is re-attached, and all associated interior components are restored. However, this method requires the removal of all vehicle interior components associated with the aluminum honeycomb flooring, resulting in a large amount of demolition and restoration work, a long construction period, and disruption to the normal operation of the rail transit vehicle. Furthermore, after replacing the aluminum honeycomb flooring, the floor covering needs to be re-laid, creating two long welded seams that affect the aesthetics of the passenger cabin. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention discloses a method for repairing aluminum honeycomb flooring, specifically including the following methods:

[0005] Detect the collapse and dents in the aluminum honeycomb floor of the passenger compartment of rail transit vehicles and obtain the specific location of the fault;

[0006] Evenly distribute injection holes at the defect locations;

[0007] A needle-like tool was used to connect the aluminum honeycomb material at the collapsed area, and then high-toughness epoxy structural adhesive was injected into the defect location.

[0008] After all the collapsed areas are completely filled with high-toughness epoxy structural adhesive, the surface of the aluminum honeycomb floor is leveled, and floor cloth of the same size as the opening is pasted at the injection hole to complete the repair of the aluminum honeycomb floor with collapsed or pitted defects.

[0009] Furthermore, multiple injection holes with a diameter of no more than 10mm are drilled at the center of the floor defect using a drill bit or hole opener.

[0010] Furthermore, several injection holes are evenly distributed at intervals of 50-100mm around the edge of the damaged part of the aluminum honeycomb floor, with the first injection hole as the center.

[0011] Furthermore, when injecting the high-toughness epoxy structural adhesive: start injecting the high-toughness epoxy structural adhesive from the middle injection hole. When high-toughness epoxy structural adhesive overflows from other injection holes, the overflowing injection holes need to be sealed until all injection holes overflow and high-toughness epoxy structural adhesive can no longer be injected, thereby enabling the high-toughness epoxy structural adhesive to form a cross-grid pattern inside the aluminum honeycomb.

[0012] Furthermore, before injecting the high-toughness epoxy structural adhesive, a suction cup-like tool is used to flatten the recessed aluminum honeycomb floor panel, thereby ensuring the flatness of the floor after repair.

[0013] Furthermore, flooring fabric pieces with the same size, color, and texture as the injection holes are used, and seamless bonding is achieved using an adhesive compatible with the original bonding flooring fabric.

[0014] By adopting the above technical solution, the present invention provides a method for repairing aluminum honeycomb floors. This method can effectively shorten the construction period of aluminum honeycomb floor repair, eliminate the need for re-customizing aluminum honeycomb floors, thereby reducing the cost of repairing aluminum honeycomb floors. It improves the efficiency of repair work by avoiding the removal of related interior decorations when repairing aluminum honeycomb floors, and avoids the additional floor cloth welds required after replacing the entire aluminum honeycomb in the original solution, thus ensuring the overall aesthetics. Furthermore, it can ensure that the repaired floor has good load-bearing capacity and waterproof function. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 The process of the method of the present invention

[0017] Figure 2 This is a schematic diagram of an embodiment of the method of the present invention.

[0018] Figure 3 This is a schematic diagram of an embodiment of the method of the present invention.

[0019] Figure 4 This is a schematic diagram of an embodiment of the method of the present invention. Detailed Implementation

[0020] To make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention:

[0021] like Figure 1 The method for repairing aluminum honeycomb flooring shown is as follows:

[0022] For aluminum honeycomb floor areas with defects such as collapse or pitting, use a drill bit or hole opener to make an injection hole 1 with a diameter of no more than 10mm at the center of the defect. The hole should extend below the aluminum honeycomb floor panel 3. Starting from the first injection hole 1, make several injection holes 1 evenly distributed at intervals of 50-100mm at the edge of the damaged part 7 of the aluminum honeycomb floor.

[0023] Then, using a long, thin, needle-like tool, through holes 2 are created between the injection holes 1 to achieve interconnection between different areas of the aluminum honeycomb flooring in the collapsed and pitted areas. Figure 2 As shown.

[0024] The high-toughness epoxy structural adhesive 6 is injected starting from the central injection hole 1. If any high-toughness epoxy structural adhesive 6 overflows from other injection holes 1, the overflowing injection holes 1 need to be sealed until all injection holes 1 show signs of overflow and it is impossible to continue injecting high-toughness epoxy structural adhesive 6. This process aims to achieve the desired effect where the high-toughness epoxy structural adhesive forms a cross-grid pattern inside the aluminum honeycomb structure. Figure 3 and Figure 4 As shown.

[0025] If there are dents in the floor, a suction cup tool should be used to flatten the dented aluminum honeycomb floor panel before injecting high-toughness epoxy structural adhesive 6 to ensure the flatness of the floor after repair.

[0026] After the injection is completed, a large cover plate is used to apply pressure to the repair area to ensure its flatness and prevent unevenness. Then, wait for the high-toughness epoxy structural adhesive 6 to cure.

[0027] For the repair of the defective flooring, flooring fabric 5 with the same or similar size, color, and texture as the injection hole 1 is used. A compatible adhesive is used for seamless bonding to ensure the repair is inconspicuous and does not affect the overall aesthetics of the floor. The repaired aluminum honeycomb flooring and the bonded flooring structure achieved using this method exhibit good load-bearing capacity and excellent waterproofing.

[0028] This invention discloses a method for repairing aluminum honeycomb flooring. For flooring with cut defects, the method involves using local aluminum honeycomb flooring panels to repair the defects, and injecting high-toughness epoxy structural adhesive into the uneven areas. After the adhesive has fully cured, the flooring at the defective area is welded using a seamless welding method to achieve the purpose of locally repairing collapsed or otherwise defective flooring.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for repairing aluminum honeycomb flooring, characterized in that... include: Detect the collapse and dents in the aluminum honeycomb floor of the passenger compartment of rail transit vehicles and obtain the specific location of the fault; Make injection holes evenly at the defect location: Use a drill bit or hole opener to make multiple injection holes with a diameter of no more than 10mm in the middle of the defect in the floor. With the first injection hole as the center, make several injection holes evenly distributed at intervals of 50-100mm at the edge of the damaged part of the aluminum honeycomb floor. A needle-like tool was used to connect the aluminum honeycomb material at the collapsed area, and then high-toughness epoxy structural adhesive was injected into the defect location. After all the collapsed areas are completely filled with high-toughness epoxy structural adhesive, the surface of the aluminum honeycomb floor is leveled, and floor cloth of the same size as the opening is pasted at the injection hole to complete the repair of the aluminum honeycomb floor with collapsed or pitted faults. When injecting high-toughness epoxy structural adhesive: start injecting high-toughness epoxy structural adhesive from the middle injection hole. When high-toughness epoxy structural adhesive overflows from other injection holes, the injection holes that are overflowing need to be sealed until all injection holes overflow and high-toughness epoxy structural adhesive can no longer be injected. This allows the high-toughness epoxy structural adhesive to form a cross-grid pattern inside the aluminum honeycomb. Use flooring fabric pieces that match the size, color, and texture of the glue injection holes, and use adhesives compatible with the original flooring fabric for seamless bonding.

2. The method for repairing aluminum honeycomb flooring according to claim 1, characterized in that: If the floor becomes dented, use a suction cup-like tool to flatten the dented aluminum honeycomb floor panel before injecting high-toughness epoxy structural adhesive, thereby ensuring the flatness of the floor after repair.

Images