Open-close movable cover of magnetic shielding device

Abstract

The invention discloses an open-close movable cover of a magnetic shielding device. The open-close movable cover comprises soft magnetic covers and insulation layers which are alternative, wherein a non-magnetic cover is arranged at an outer layer of the movable cover, the non-magnetic cover, the soft magnetic covers and the insulation layers are connected integrally by a fixed connection piece, an adjustable connection plate penetrates through a panel of the non-magnetic cover and extends out of the non-magnetic cover, an extension end is connected with a movable cover trailer, the movable cover can translate relative to the adjustable connection plate within a limited range. The movable cover of the magnetic shielding device is high in structural strength and can be used for a long time,and fatigue deformation can be prevented. A movable connection structure is arranged on a plate strip, the movable cover can be moved leftwards, rightwards, upwards and downwards according to an actual demand, so that the movable cover is aligned to a center of a magnetic shielding cylinder, the function of integral cover opening or integral cover buckling is achieved, the labor intensity of an operator is reduced, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of magnetic shielding devices, and in particular relates to a fully openable and fully closed movable cover of a magnetic shielding device. Background technique [0002] With the rapid development of modern industrial technology, all kinds of electronic products have emerged as the times require. Digital and high-low frequency electronic equipment will also radiate a large number of electromagnetic waves of different wavelengths into the space when they are working. Electromagnetic radiation pollution has become the main obstacle for high-precision weak magnetic field measurement. . Magnetic shielding is mainly used in atomic time-frequency systems, magnetic sensor calibration, inertial gyroscopes, fiber optic gyroscopes, laser gyroscopes, and precision instruments. The function of the magnetic shielding device is to shield the earth's magnetic field and the stray magnetic field of the environment outside t...

AI Technical Summary

Problems solved by technology

The magnetic shielding device is a horizontal cylindrical multi-layer structure, generally three to ten layers, correspondingly the number of movable covers should be the same, frequent closing and opening operations will waste a lot of time, and at the same time when the diameter of the magnetic shielding cylinder When it is larger, the diameter and weight of the movable cover will also increase accordingly. For example, a magnetic shielding cylinder with a diameter of 120cm is equipped with a layer of end covers of about 20kg. If there are eight end covers, the total weight of the end covers is about 160kg. , Frequent closing and opening of the cover makes the operator labor-intensive and brings great inconvenience

[0005] And the existing magnetic shielding tube is supported by two aluminum right-angle structures arranged on both sides of the bottom plate, the contact between the magnetic shielding tube and the aluminum right-angle structure is line contact, the contact area is small, and the magnetic shielding tube and the aluminum right-angle structure The surface of the structure is smooth, so that the friction between the magnetic shielding cylinder and the aluminum right angle is also very small. When the magnetic shielding cylinder is buckled, the magnetic shielding cylinder will be displaced, which greatly affects the operation of buckling the lid

At the same time, due to the uneven force on the magnetic shielding cylinder, when the weight of the magnetic shielding cylinder is large, it will cause deformation of the magnetic shielding cylinder, and even the end cover of the magnetic shielding cylinder cannot be closed.

[0006] A magnetic shielding device has been disclosed in the patent literature, including a magnetic shielding cylinder and a magnetic shielding cover, wherein the shielding cover and the magnetic shielding cylinder are connected by a hinge, although it can solve the time-consuming and labor-intensive problem caused by manual operation in a short time, but Generally, the self-weight of the magnetic shielding cover is too high, and the strength of the hinge and its connecting parts is very high. After a long-term load and frequent use, the hinge and its connecting parts will experience fatigue and structural deformation. The center of the magnetic shielding cover and the magnetic shielding tube may It will not be in a straight line, which will hinder the closing of the end cover, and may also cause the magnetic flux leakage of the magnetic shielding device to become more and more serious

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