Electromagnetic shielding shelter and manufacturing method thereof

Abstract

The invention provides an electromagnetic shielding shelter and a manufacturing method thereof. Full welding is performed along gaps of external angle aluminum of the shelter and external skins of the shelter in a gas protection welding mode, and gas is pure argon. After the external angle aluminum and internal angle aluminum are installed, conductive adhesive is filled into an adhesive filling hole in the external angle aluminum until whole grooves and the gaps between the external angle aluminum and the external skins are filled with the adhesive. An aluminum angle part is welded to the lap joint position of three large plates of the shelter, and full welding is performed on lap joint gaps so as to guarantee the shielding performance of the lap joint position of the three large plates. According to the electromagnetic shielding shelter, a closed metal body on the outer surface of the shelter is formed by the external skins, the external angle aluminum and the aluminum angle parts according to metal continuity of the external skins of the shelter, and therefore the requirements of electromagnetic shielding of the shelter are met.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding shelters, and in particular relates to a manufacturing method of an electromagnetic shielding shelter relying on outer skin shielding. Background technique [0002] At present, the demand for shielding shelters in the domestic market is gradually increasing, and electromagnetic shielding performance plays a very important role in both civilian and military shelters. [0003] There are two main ways to shield the shelter: inner skin shielding and outer skin shielding. At present, most shielding shelters adopt the method of inner skin shielding, and the inner skins are connected by inner angle aluminum to form a six-sided shielding field. However, there are many cabinets and equipment inside the shelter, which need to be installed firmly and reliably, so the cabinets, equipment, etc. must be screwed or riveted to the backing plate inside the large board, so the number of holes on the inner ...

AI Technical Summary

Problems solved by technology

Due to the large number of holes drilled on the angle aluminum, there are 19 holes per 1 meter (with a spacing of 100mm), and the magnetic flux leakage of holes and gaps is an important factor that makes it difficult to improve the shielding effectiveness of the current shelter. Therefore, the riveting method of the outer angle aluminum leads to square It is difficult to completely overcome the phenomenon of magnetic flux leakage in the cabin

[0008] In addition to the above electromagnetic shielding problems, the outer skin also has problems of waterproofing, rain leakage, bulging, and debonding

Although the inner surface of the outer corner aluminum is coated with sealant, it is very unreliable for the waterproof performance of the shelter. The shelter must be subjected to a rain test before leaving the factory. However, after a period of use, water leakage occurs to varying degrees. After inspection, common The reason is that the gap between the rivet hole and the sealing layer causes water leakage

At the same time, the skin of the shelter is debonded and bulging is also one of the most common problems. Since the main working place of the shelter is in the open air or in the wild, the surface temperature of the cabin can reach a maximum of 90°C under direct sunlight, and the outer skin has been exposed to high temperatures for a long time. Deformation occurs under the roof, and it is easy to cause debonding and bulging, which seriously affects the normal use of the shelter

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