Impact-resistant air defense door

Abstract

The embodiment of the invention discloses a novel anti-impact civil air defence door. The novel anti-impact civil air defence door comprises two inner sealing doors, a plurality of rails, outer anti-impact doors and air cylinders, wherein the two inner sealing doors are connected with outer wall bodies through hinges correspondingly, and one end of each inner sealing door is provided with one slope; the rails are arranged parallelly in a staggered mode, and extend from the inside parts of the outer wall bodies to the outer sides of the inner sealing doors; the outer anti-impact doors are arranged on the rails; the air cylinders are arranged in the outer wall bodies, are in one-to-one correspondence with the outer anti-impact doors, and the outer anti-impact doors can be pushed by the air cylinders to slide on the rails. The novel anti-impact civil air defence door has the following beneficial effects that the novel anti-impact civil air defence door is provided with the outer anti-impact doors, the fragile inner sealing doors can be protected against the direct impact of water flow and air waves, personnel can still pass after the outer anti-impact doors are deformed and damaged after being impacted, and the condition of personnel trapping is avoided.

Description

technical field [0001] The invention relates to a civil defense door, in particular to an impact-resistant civil defense door. Background technique [0002] The civil air defense door is a door with wartime protection function set at the entrance and exit of the civil air defense. It is usually made of reinforced concrete or steel structure, which is durable but heavy in weight. The civil air defense door is usually connected to the wall by hinges, and the connection part of the civil air defense door is relatively fragile compared with the whole. When the impact comes, the civil air defense door obtains a huge load in a short time, and the hinge is in a high load state at ordinary times, and it is very easy to break and break at this time. As a result, the civil air defense door could not be reopened, and people who took refuge in the civil air defense project were trapped in it, which increased the difficulty of subsequent rescue. Contents of the invention [0003] Th...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the embodiments of the present invention is to propose a shock-resistant civil air defense door in view of the fact that the hinges connected to the wall are easily damaged when the civil air defense door receives an impact, resulting in the failure of the civil air defense door to open.

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