Rapid shielding protection device

A kind of protective device and fast technology, applied in the field of damage assessment and measurement, which can solve the problem of inability to face the straight camera protection and other problems
CN112730036APending Publication Date: 2021-04-30XIAN MODERN CHEM RES INST
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN MODERN CHEM RES INST
Publication Date
2021-04-30

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Abstract

The invention provides a rapid shielding protection device which comprises a supporting frame, an upper transmission telescopic rod is arranged on an upper cross beam inwards in the vertical direction, the upper end of the upper transmission telescopic rod is fixed to the upper cross beam, and the lower end of the upper transmission telescopic rod is installed on the upper side of an upper shielding plate. A lower transmission telescopic rod is inwards arranged below the lower cross beam in the vertical direction, the lower end of the lower transmission telescopic rod is fixed to the lower cross beam, and the lower end of the lower transmission telescopic rod is installed on the lower side of the lower shielding plate; the lower side of the upper shielding plate and the upper side of the lower shielding plate are arranged in an aligned mode, and the upper shielding plate and the lower shielding plate form a shielding protection plate capable of being opened and closed in the vertical direction. According to the invention, the protection of the back-to-hand shooting camera in the fragment / projectile impact target plate test can be completed within milliseconds, the dynamic image information acquisition in the petal crevasse forming process is ensured, and the direct shooting observation of the back-to-back damage process in the fragment / projectile penetration target plate process is well realized.
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Description

technical field

[0001] The invention belongs to the field of damage evaluation and measurement, relates to damage evaluation tests, and in particular to a fast shielding protection device. Background technique

[0002] It is a common damage mode that fragments / projectiles penetrate metal plates to form petal-shaped breaches. So far, many researches on this damage mode have been carried out at home and abroad. Nurick et al. carried out deformation and damage tests of metal steel plates under the action of different doses of contact explosions, and observed the phenomenon of petal-shaped cracking and turning of steel plates. Li Chuanzeng et al. carried out the test of the vertical high-speed impact of the explosively formed projectile on the 603 armor plate, and observed the everted petal-shaped perforation at the exit of the target plate with tensile fracture characteristics. Jiang Zhigang et al. established a dimensionless expression for the minimum penetration energy of th...

Claims

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