Novel impact preventing civil air defence door

Abstract

The embodiment of the invention discloses a novel impact preventing civil air defence door. The novel impact preventing civil air defence door comprises two inner sealing doors, rails, two outer impact preventing doors and springs, wherein the two inner sealing doors are connected with an outer wall body through hinged chains correspondingly, and one end of each inner sealing door is provided with one slope; the rails are arranged on the outer sides of the inner sealing doors, the rails comprise one transversal rail and four longitudinal rails, the longitudinal rails are arranged at intervals, perpendicularly communicate with the transversal rail and are arranged towards the inner sealing doors; two universal wheels are installed on the lower bottom face of each outer impact preventing door and are arranged in the rails, the contact surfaces of the two outer impact preventing doors are arranged in a sawtooth shape, and the outward-opening side of each outer impact preventing door is arranged to be an arc surface; one end of each spring is connected with the outer wall body, the other end of each spring is connected with a rubber cushion block, and the springs and the longitudinal rails are arranged parallelly. According to the novel impact preventing civil air defence door, the outer impact preventing doors are arranged out of the inner sealing doors and are used for bearing the impact load, and the problem that inner sealing doors cannot be opened after being damaged by the impact load is solved.

Description

technical field [0001] The invention relates to a civil defense door, in particular to a novel impact-proof 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] T...

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 new type of impact-proof civil air defense door for the situation that the hinges connected to the wall are easily damaged when the current civil air defense door receives an impact, resulting in the failure of the civil air defense door to open.

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