2results about How to "Improve ballistic performance" patented technology

This utility model belongs to the field of anti-theft door technology and discloses a multi-level anti-theft door with bulletproof level, including a door frame; a door body, the door body being disposed within the door frame; the door body including a shell, a central layer frame being disposed within the shell, the central layer frame being detachably connected to the shell; a bulletproof module being detachably installed within the central layer frame, the bulletproof module being composed of multiple unit bulletproof modules arranged in a layered structure, and the unit bulletproof modules being tightly connected to each other; a back cover being provided on the shell, and a clamping buffer mechanism being provided between the back cover and the bulletproof module for clamping and fixing the bulletproof module within the shell; this utility model solves the problems of traditional anti-theft doors being unable to be disassembled or replaced individually and unable to flexibly adjust the bulletproof level, and is applicable to bulletproof anti-theft doors.

The application discloses a ceramic curved surface composite target plate, which comprises a metal back plate and at least two ceramic curved surface layers stacked in sequence from bottom to top, and each ceramic curved surface layer is composed of a plurality of ceramic arched curved surface units; the outer surface of the ceramic arched curved surface unit is composed of two top surfaces, two 1# side surfaces, two 2# side surfaces and two bottom surfaces; the ceramic arched curved surface units between the same layer and between the adjacent layers are staggered and overlapped, the adjacent 1# side surfaces and 2# side surfaces are tightly attached, the adjacent top surfaces and bottom surfaces are tightly attached, the upper surface of the metal back plate is tightly attached to the lowermost ceramic curved surface layer, and an arched force transmission structure is formed. The application has the characteristics of fully and uniformly conducting force and buffering, improves the impact resistance, is more excellent in impact resistance than a conventional composite plate, is lighter than a traditional metal protective plate, and is low in cost.