Safety device of strong impact load triggering safety case transmission mechanism

Abstract

The invention discloses a safety device of a strong impact load triggering safety case transmission mechanism. The safety device is characterized by being composed of a sliding shaft (1), a compressed spring (2), a fragility sheet (3), a shell (4) and a gland (5). The sliding shaft (1) is in interference fit with an inner cavity of the shell (4), the compressed spring (2) is arranged below the sliding shaft (1), the fragility sheet (3) is fixed at the top of the shell (4), the compressed spring (2) is tightly pressed with the gland (5) to be in a pressed state, the sliding shaft (1) is packaged inside the shell (4) through the gland (5), a hole is formed in the center of the gland (5) and corresponds to the sliding shaft (1) in position, and the diameter of the hole is larger than the diameter of the sliding shaft (1). The safety device is compact and simple in structure and can be conveniently installed in the transmission mechanism of a safety case door or a vault door, once locks fall off due to detonation damage, the sliding shaft (1) of the safety device pops out to serve as a mortise and tenon, the transmission mechanism can still be prevented from being in an unlocking state, and the detonation damage resisting capacity of the safety case door is effectively improved.

Description

Technical field: [0001] The invention relates to the technical field of the security industry, in particular to a safety device for a transmission mechanism of a safe excited by a strong impact load, which is suitable for the transmission mechanism of a C-class safe cabinet door and a vault door, and improves the anti-detonation damage ability of the door. Background technique: [0002] In addition to resisting tool damage and flame cutting, the biggest feature of C-level safes is anti-detonation, and the single charge can reach 113gTNT equivalent. Explosives are a very powerful means of destruction. Its effect on the cabinet door is mainly to use the high-intensity pressure wave of the detonation to cause the lock installed inside the cabinet door at the explosion point to loosen, fall off or disintegrate, resulting in the lock used to limit the position of the bolt body. If the tenon fails, the lock bolt in the free state can easily withdraw from the bolt hole to open the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a kind of strong impact load excitation safe transmission mechanism safety device, which mainly solves the problem of insufficient limit ability and detonation condition of the existing double lock configuration C-class safe transmission device. It is easy to cause two tenons to fail at the same time and the lock bolt to withdraw to make the cabinet door open and other problems.

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