Coupling method for vibrating table and shielding box body

Abstract

The invention provides a coupling method for a vibrating table and a shielding box body. The coupling method comprises the following steps: 1) forming a hole in the connection part of the shielding box body and the vibrating table according to the size of a moving coil of the vibrating table, and setting a predetermined allowance at the hole for allowing the moving coil of the vibrating table to shake in the radial direction; 2) adding a tool on the moving coil of the vibrating table, dividing the tool into an upper half part and a lower half part, arranging the upper half part in the shielding box body for fixing a test article, and fixing the lower half part on the moving coil of the vibrating table and out of the shielding box body; 3) arranging a conductive rubber film between the upper half part and the lower half part to play a shielding role, and connecting the upper half part with the lower half part by virtue of bolts. By adopting the scheme, the requirement that the moving coil of the vibrating table vibrates and shakes in the axial direction can be met while the shielding performance of the shielding box body is ensured, and the experiment and test of product performance under the coupling effect of an electric magnetic field and vibratory stress can be possible.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic shielding, and in particular relates to a method for connecting a vibrating table and a shielding box. Background technique [0002] The combination of the vibrating table and the shielding box is a new situation, which brings about the problem that the moving coil of the vibrating table must vibrate in the axial direction while ensuring the shielding effectiveness. At present, there is no mature solution for this situation. [0003] Electromagnetic shielding includes magnetic field shielding, electric field shielding, and electromagnetic field shielding. Under the premise of certain shielding box materials and shapes, measures such as appropriate grounding methods, improvement of hole leakage, and proper handling of cables passing through the shielding body are generally used to improve shielding. The shielding effectiveness of the box, here, no cable passes through the shielding box, mai...

AI Technical Summary

Problems solved by technology

[0005] 1. While the vibrating table is vibrating in the axial direction, there is also a large shaking in the radial direction, and the finger reeds and conductive rubber gaskets are not applicable in this case

[0006] 2. Finger reeds and conductive rubber pads will wear out quickly when the vibration table is performing high-frequency vibration tests

[0007] 3. The use of these two shielding methods will make the vibrating table and the shielding box form an electrical contact, destroying the screen

[0010] 1. At present, the shielding of holes and seams generally does not consider the existence of relative motion. While the moving coil of the vibrating table vibrates in the axial direction, there is also a large sway in its radial direction. At present, there is no solution for this new demand. mature technology

[0011] 2. Although the beryllium bronze finger reed and the conductive rubber gasket allow relative movement at the shielded hole, the shielding performance is greatly reduced when there is both vibration and shaking in the connection between the vibrating table and the shielding box.

[0013] 4. The use of these two shielding methods will make the vibration table and the shielding box form electrical contact, destroying the original grounding method of the shielding box

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