Polishing tool for paint layer at nut mounting position of negative wire supporting plate

Abstract

A polishing tool for a paint layer at the installation position of a nut of a negative wire supporting plate comprises a limiting rod with the diameter capable of being replaced, a polisher quick-change connector, a connecting handle with different shapes capable of being replaced and an electric polisher quick-change connector, and the limiting rod is fixed to the polisher quick-change connector. The outer diameter of the limiting rod is not greater than the inner diameter of a connecting hole in the quick-change connector of the sander; the sander quick-change connector is connected with a connecting handle, and the connecting handle is detachably connected with an electric sander quick-change connector used for being connected with an electric sander. According to the utility model, the problem that primer needs to be coated again due to excessive polishing of a paint layer on the binding surface of the polishing structure and the negative wire supporting plate nut can be effectively solved, and the production efficiency is effectively improved; and meanwhile, by replacing and installing the polisher quick-change connectors with the limiting rods of different diameters and the connecting handles of different shapes, the negative wire supporting plate nut polishing device is suitable for polishing negative wire supporting plate nuts of different hole diameters and paint layers of negative wire supporting plate nut mounting areas at different structural areas, universality is improved, and polishing quality can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of paint layer polishing devices, in particular to a polishing tool for the paint layer at the installation location of a negative wire support plate nut. Background Art

[0002] To reduce the impact of static electricity and lightning on aircraft and ensure optimal antenna performance, a grounding wire is currently installed by riveting a negative wire support nut onto the aircraft structure. This provides a stable, low-impedance electrical path between the aircraft's metal components, as well as between components, equipment, accessories, and the base structure. This prevents electromagnetic interference between components and provides a return path for the power supply current. However, before installing the negative wire support nut, the paint coating on the mating surface between the structure and the negative wire support nut must be sanded off, and the sanding area must be larger than the mating area. The current method of sanding the paint coating on the mating surface between the structure and the negative wire support nut is prone to over-sanding. Consequently, after installing the support nut, the over-sanded areas still need to be primed. The larger the number of negative wire support nuts, the larger the re-priming area. This method is not only time-consuming, labor-intensive, and material-intensive, but also wasteful. Furthermore, if the negative wire support nut is located in a remote location, it is easy to forget to re-prime, which can affect the aircraft's anti-static and lightning protection performance and ultimately lead to aircraft accidents. Utility Model Content

[0003] The technical problem solved by the present invention is to provide a tool for polishing the paint layer at the installation location of the negative wire support plate nut, so as to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by the following technical solutions:

[0005] A tool for grinding the paint layer at the installation location of a negative wire support plate nut, comprising a limit rod with replaceable diameter, a grinder quick-change joint, a connecting handle with replaceable shapes, and an electric grinder quick-change joint, wherein the limit rod is fixed on the grinder quick-change joint, and the outer diameter of the limit rod is not greater than the inner diameter of the connecting hole on the grinder quick-change joint; the grinder quick-change joint is connected to the connecting handle, and the connecting handle is detachably connected to the electric grinder quick-change joint for connecting to an electric grinder.

[0006] In the present invention, the limiting rod is a cylindrical structure with a closed bottom end, and the outer diameter of the limiting rod is smaller than the diameter of the nut hole of the negative wire support plate. When in use, the limiting rod is clamped in the nut hole of the negative wire support plate.

[0007] In the present invention, the quick-change connector of the grinder is used to fix the limit rod and play the role of grinding the paint layer at the installation location of the negative wire support plate nut. By replacing the quick-change connector of the grinder with limit rods of different diameters, the grinding requirements of the paint layer at the installation location of the negative wire support plate nut with different apertures can be met.

[0008] In the present utility model, the connecting handle is a rectangular flat structure, one end of the connecting handle is connected to the quick-change connector of the grinder, and the other end of the connecting handle is connected to the quick-change connector of the electric grinder. Connecting handles of different shapes can be used to grind the paint layer in the negative wire support plate nut installation area in different structural areas.

[0009] In the present invention, the connecting handle and the electric grinder quick-change joint are respectively provided with pin holes, and a pin shaft is inserted into the pin hole to achieve a detachable connection between the connecting handle and the electric grinder quick-change joint.

[0010] Beneficial effects: The utility model can effectively solve the problem that the paint layer on the contact surface between the grinding structure and the negative wire support plate nut needs to be re-coated with primer due to excessive grinding, thereby effectively improving production efficiency; at the same time, by replacing the grinder quick-change joint with limit rods of different diameters and connecting handles of different shapes, it is suitable for grinding the paint layer of negative wire support plate nuts of different apertures and the negative wire support plate nut installation areas in different structural areas, thereby improving versatility and ensuring grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of a preferred embodiment of the present utility model.

[0012] Figure 2 It is a top view of a preferred embodiment of the present utility model.

[0013] Figure 3 It is a cross-sectional view of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0015] See also Figures 1-3 A tool for grinding the paint layer at the installation location of a negative wire support plate nut, comprising a limit rod 1, a grinder quick-change joint 2, a connecting handle 3 and an electric grinder quick-change joint 4, wherein the limit rod 1 is fixed on the grinder quick-change joint 2, and the outer diameter of the limit rod 1 is not larger than the inner diameter of the connecting hole on the grinder quick-change joint 2; the grinder quick-change joint 2 is connected to the connecting handle 3, and the connecting handle 3 is detachably connected to the electric grinder quick-change joint 4, and the electric grinder quick-change joint 4 is used to connect to the electric grinder to transmit force, and the detachable connection makes the electric grinder quick-change joint 4 very easy to replace when problems occur.

[0016] In this embodiment, the limiting rod 1 is a cylindrical structure with a closed bottom end, and the outer diameter of the limiting rod 1 is smaller than the diameter of the nut hole of the negative wire support plate. When in use, the limiting rod 1 is clamped in the nut hole of the negative wire support plate.

[0017] In this embodiment, the grinder quick-change connector 2 is used to fix the limit rod 1 and play the role of grinding the paint layer at the installation location of the negative wire support plate nut. By replacing the grinder quick-change connector 2 with a limit rod 1 of different diameters, the grinding requirements of the paint layer at the installation location of the negative wire support plate nut with different apertures can be met.

[0018] In this embodiment, the connecting handle 3 is a rectangular flat structure, one end of the connecting handle 3 is connected to the grinder quick-change connector 2, and the other end of the connecting handle 3 is connected to the electric grinder quick-change connector 4. Connecting handles 3 of different shapes can be used to grind the paint layer in the negative wire support plate nut installation area in different structural areas.

[0019] In this embodiment, the connecting handle 3 and the electric grinder quick-change connector 4 are respectively provided with pin holes, and a pin shaft is inserted into the pin hole to achieve a detachable connection between the connecting handle 3 and the electric grinder quick-change connector 4.

[0020] In this embodiment, the specific use is as follows:

[0021] (1) First, assemble the grinder quick-change connector 2 of appropriate diameter, the connecting handle 3 of appropriate shape and the electric grinder quick-change connector 4 into a grinding tool for the paint layer at the installation location of the negative wire support nut;

[0022] (2) Insert the electric grinder quick-change connector 4 into the clamping port of the electric grinder, and adjust the position so that the quick-change connector 2 of the grinder fits the paint layer where the negative wire support plate nut is installed and fits tightly with the negative wire support plate nut;

[0023] (3) Turn on the electric grinder to complete the grinding of the paint layer at the installation location of the negative wire support nut.

[0024] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A tool for polishing the paint layer at the installation site of the negative wire support plate nut, comprising a limit rod with interchangeable diameters, a quick-change connector for a grinder, a connecting handle with interchangeable shapes, and a quick-change connector for an electric grinder, characterized in that: The limit rod is fixed on the grinder quick-change joint, and the outer diameter of the limit rod is not larger than the inner diameter of the connecting hole on the grinder quick-change joint; the grinder quick-change joint is connected to the connecting handle, and the connecting handle is detachably connected to the electric grinder quick-change joint for connecting the electric grinder.

2. A grinding tool for the paint layer at the installation location of the negative wire support plate nut according to claim 1, characterized in that: The limiting rod is a cylindrical structure with a closed bottom end.

3. A grinding tool for the paint layer at the installation location of the negative wire support plate nut according to claim 2, characterized in that: The outer diameter of the limiting rod is smaller than the diameter of the nut hole of the negative wire supporting plate.

4. A grinding tool for the paint layer at the installation location of the negative wire support plate nut according to claim 1, characterized in that: The connecting handle is a rectangular flat structure.

5. A grinding tool for the paint layer at the installation location of the negative wire support plate nut according to claim 1, characterized in that: The connecting handle and the electric grinder quick-change joint are respectively provided with pin holes for inserting pin shafts to achieve detachable connection.

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