Device for preventing glue from entering holes during glue pressing of aircraft radome

Abstract

The utility model belongs to the technical field of aviation assembly, and relates to a device for preventing glue from entering a hole during glue pressing of an aircraft radome, the device comprises a first threaded pipe, a second threaded pipe and a standby nut, the first threaded pipe is of a rod-shaped structure with threads inside and outside, and the end part of the first threaded pipe is provided with a boss; the second threaded pipe is provided with an external thread; during use, the first threaded pipe is mounted on the quick-release lock nut of the machine body structure, the second threaded pipe penetrates through the antenna housing mounting hole and then is screwed into the first threaded pipe, and the antenna housing and the boss of the first threaded pipe are pressed tightly through the standby nut. The device can effectively ensure that glue does not enter a hole in the gluing process, meanwhile, the cover is quickly positioned and mounted after the machine body is glued, and meanwhile, the glue pressing thickness of the cover and the machine body is ensured. And the workload of increasing a gasket to control the thickness in the original cover positioning, mounting and rubber pressing process is reduced, and the efficiency of the whole cover mounting and rubber pressing process is improved.

Description

Technical Field

[0001] This utility model belongs to the field of aviation assembly technology and relates to a device for preventing glue from entering the holes during the pressing of an aircraft antenna cover. Background Technology

[0002] Before applying the sealant to the cover, the cover needs to be initially positioned and installed. Quick-release screw holes for connecting the cover to the machine body are drilled, and quick-release locks are installed on the machine body. After installation, a certain thickness of external sealant needs to be applied between the quick-release lock and the skin mating surface. Finally, the cover is tightened and fixed onto the sealant layer using the quick-release screw holes. After the sealant has cured to the required hardness, excess sealant is removed. During this sealing process, in addition to ensuring the thickness and hardness of the sealant, it is also necessary to ensure that the sealant does not enter the quick-release lock holes connecting the machine body and the cover. The commonly used method is to insert cotton into the quick-release lock mounting holes before applying the external sealant to the machine body mating surface. Then, the external sealant is applied normally. After application, the cotton is removed with a tool. Finally, the cover is aligned with the mounting holes, the process screws are installed, and the cover is pressed onto the sealant surface to form the cover shape before curing. While this sealing process ensures to some extent that there is no excess adhesive in the quick-release lock holes for the cover installation, it makes it difficult to locate the cover installation holes after applying the adhesive, and cotton stuck in the holes is difficult to remove. Furthermore, during removal, fibrous material can easily remain in the quick-release lock holes, affecting the cover installation quality. To address the advantages and disadvantages of existing cover sealing methods, this invention aims to provide a set of combined fixtures installed on quick-release locks. This ensures that no adhesive enters the quick-release lock holes during the application of sealant to the connection surface between the cover and the machine body. It also allows for quick location of screw installation holes after adhesive application, enabling the cover to be tightened and secured to the machine body while applying sealant thickness. Finally, removing the fixture leaves no excess material in the holes, improving the cover positioning and installation speed and the quality of sealant application. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] This invention overcomes the problems of existing cover installation processes where the protective material inside the quick-release locking hole is difficult to remove, making it difficult to align the cover with the mounting hole for quick installation and control the sealant thickness. During the cover installation and sealant application process, this invention ensures that no sealant enters the quick-release locking hole during the application of sealant to the connection surface between the cover and the machine body. After applying the sealant, the screw mounting holes can be quickly located, and the cover is tightened and fixed onto the machine body using this assembly, ensuring the sealant thickness. Finally, when removing this assembly, no excess material is left in the holes, improving the cover positioning and installation speed and the sealant application quality.

[0005] 2. Technical Solution

[0006] A device for preventing adhesive from entering the hole during the pressing of an aircraft radome, the device comprising: a first threaded tube, a second threaded tube, and a spare nut, wherein the first threaded tube is a rod-shaped structure with threads on both the inside and outside, and a boss is provided at the end; the second threaded tube is provided with external threads; in use, the first threaded tube is installed on the quick-release lock nut of the fuselage structure, the second threaded tube passes through the mounting hole of the radome and is screwed into the first threaded tube, and the spare nut is used to press the radome and the boss of the first threaded tube tightly.

[0007] Furthermore, a cutting groove is provided around the boss to facilitate the assembly and disassembly of the first threaded tube.

[0008] Furthermore, the thickness of the boss is designed according to the thickness of the adhesive used to press the antenna cover.

[0009] Furthermore, the outer diameter of the first threaded tube matches the diameter of the antenna radome mounting hole.

[0010] Furthermore, the spare nut has a hexagonal structure, which facilitates tightening and adjustment.

[0011] The operation process is as follows:

[0012] After drilling holes in the cover to install quick-release locks or support nuts, tighten the threaded rod-shaped structure into the quick-release lock mounting holes connecting the cover and the skin or plate. Then, apply sealant to the seam between the cover and the skin or plate. Next, align the stud structure with the mounting holes, insert it into the threaded rod-shaped structure, and tighten it to secure it to the machine body. Finally, the operator moves or transports the cover to the installation location on the machine body, aligns the quick-release lock screw mounting holes on the cover with the stud structure, passes the cover through the stud structure, and then tightens it with a spare nut. Tightly attach the cover to the machine body surface. During the tightening process, continuous sealant should be squeezed out from the gap between the cover and the machine body. Since the threaded rod structure has a boss with a boss height that matches the thickness of the sealant, the thickness of the sealant in the gap after all the excess sealant is squeezed out is the required thickness for the sealant. Cut off the excess sealant, press out the required sealant for the cover and skin, remove the cover, and wait for the sealant to cure and reach hardness. Then remove the tooling and install the cover using the product standard parts.

[0013] 3. Beneficial technical effects

[0014] This invention provides an improved method for sealing a cover. By using a fixture to securely connect the cover and the machine body, it ensures that no adhesive enters the holes during the adhesive application process, while simultaneously guaranteeing quick positioning and installation of the cover after adhesive application to the machine body, and maintaining the correct sealant thickness between the cover and the machine body. This eliminates the need for the cycle of removing excess adhesive from the holes during the original installation process, and solves the problems of difficulty in removing cotton fibers and lint when using cotton to seal the holes. Furthermore, it reduces the workload of adding shims to control the thickness during the original cover positioning and sealing process, thus improving the overall efficiency of the cover installation and sealing process. Attached Figure Description

[0015] This utility model design has 5 attached drawings, and the drawings and their descriptions are as follows:

[0016] Figure 1 This is a schematic diagram of the adhesive application for the cover of this utility model;

[0017] Figure 2 This is a schematic diagram of the adhesive pressing device assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the threaded screw of this utility model being installed onto the machine body;

[0019] Figure 4 This is a schematic diagram of the installation of the stud and cover of this utility model;

[0020] Figure 5 This is a schematic diagram of the working operation of the sealing device for the cover after assembly of this utility model;

[0021] Wherein: 1-threaded rod structure, 2-stud, 3-nut, A-cover, B-body shape. Detailed Implementation

[0022] The working process of the cover positioning and pressing device is described in detail with reference to the attached diagram:

[0023] 1) such as Figure 2 As shown, the device of this utility model includes a threaded rod-shaped structure 1 with threads on both the inside and outside. One end of the rod-shaped structure has a boss slightly larger than the mounting hole diameter. The boss has a tool groove for easy installation. The threaded rod-shaped structure 1 is available in various specifications according to the mounting hole diameter of the quick-release screws and the thickness of the interlayer for different covers. The threaded rod-shaped structure 1 is installed into the quick-release locking hole of the cover through the external thread and tightened. When the cover is installed, after the cover contacts the upper surface of the boss, there will be a boss height between the cover and the skin. The boss height is equal to the thickness of the adhesive layer between the contact surfaces of the cover and the skin.

[0024] 2) such as Figure 2As shown, the device of this utility model is further provided with a stud 2 with external threads. The thread of the stud structure is used in conjunction with the thread of the threaded rod structure 1. When in use, it is aligned with the mounting hole of the cover and installed into the threaded rod structure (threaded rod structure 1) and tightened to fix it on the machine body.

[0025] 3) such as Figure 2 As shown, in the specific design of this utility model, a spare nut 3 is provided. After the stud 2 passes through the mounting hole on the cover, the spare nut 3 is tightened to secure the cover to the machine body.

[0026] The present invention specifically designs a device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome. The specific implementation process is as follows:

[0027] 1) Determining the range of adhesive application on the machine body surface

[0028] Based on the existing quick-release screw holes on the cover and the quick-release screw holes on the machine body surface, the operator fixes the cover to the machine body surface with process screws and attaches paper tape around it to determine the glue application area and width.

[0029] 2) Install the threaded rod in the mounting hole before applying adhesive:

[0030] After determining the application area and width, the operator removes the cover. Before applying external sealant to the machine body at the area where it contacts the cover, use a flathead screwdriver to install the threaded rod structure 1 with internal and external threaded rods into the quick-release locking holes of the machine body cover and tighten it. Then, apply external sealant to the machine body surface. The sealant thickness should be greater than the required adhesive thickness, and the width of the sealant should extend beyond the edge of the paper tape. See... Figure 3

[0031] 3) Install studs to connect the cover to the machine body:

[0032] After the fuselage is coated with sealant, to prevent the cover from sticking to the sealant, a low-temperature grease should be applied to the surface of the cover where it will adhere to the sealant, or a release film should be used for isolation. Using a wrench or similar tool, align the stud structure (stud 2) with the mounting hole and insert it into the threaded rod structure (threaded rod structure 1), then tighten it onto the fuselage. Next, align the cover, coated with low-temperature grease or with a release film, with the quick-release screw mounting hole and install it through the stud structure (stud 2) onto the outer surface of the fuselage skin. See [link / details]. Figure 4

[0033] 3) Tighten the nut and apply the sealant:

[0034] Tighten the spare nut (supplementary nut 3) to secure the cover to the machine body surface. During tightening, continuous sealant should be squeezed out from the gap between the cover and the machine body. Since the threaded rod-shaped structure (threaded rod-shaped structure 1) has a boss with a height consistent with the sealant thickness, the final sealant thickness within the gap after all excess sealant has been squeezed out is the required sealant thickness. See Figure 5

[0035] 4) Separate the cover:

[0036] Once the sealant has cured to a certain hardness, cut off the excess sealant, loosen the cover, remove the cover from the machine body, and wait for the sealant to naturally vulcanize or use a vulcanization heating device to heat and vulcanize the sealant.

[0037] 5) Remove the threaded rod-shaped structure 1 and prepare the nut 3, then restore the cover installation;

[0038] After the sealant applied between the cover and the body reaches vulcanization hardness, the threaded rod-shaped structure 1 and spare nut 3 fixed to the body are removed using tools such as a flathead screwdriver and a wrench. The cover is then installed and fastened to the body through the quick-release lock mounting hole using the standard cover installation parts.

Claims

1. A device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome, characterized in that, The device includes: a first threaded tube, a second threaded tube, and a spare nut. The first threaded tube is a rod-shaped structure with threads on both the inside and outside, and a boss is provided at the end. The second threaded tube is provided with external threads. In use, the first threaded tube is installed on the quick-release lock nut of the body structure, and the second threaded tube passes through the antenna cover mounting hole and is screwed into the first threaded tube. The spare nut is used to press the antenna cover and the boss of the first threaded tube together.

2. The device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome as described in claim 1, characterized in that, The outer periphery of the boss is provided with a cutting groove.

3. The device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome as described in claim 1, characterized in that, A boss slightly larger than the mounting hole diameter is located on one end of the rod-shaped structure.

4. The device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome as described in claim 1 or 3, characterized in that, The thickness of the boss is designed according to the thickness of the adhesive bonding of the radome.

5. The device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome as described in claim 1, characterized in that, The outer diameter of the first threaded tube matches the diameter of the antenna radome mounting hole.

6. The device for preventing adhesive from entering the holes during the pressing of an aircraft antenna radome as described in claim 1, characterized in that, The spare nut has a hexagonal structure.

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