A double-opening air defense door

Abstract

The invention discloses a double-opening-type civil air defence door, and relates to the field of civil defence engineering. The double-opening-type civil air defence door comprises a door frame, twodoor bodies are rotatably connected to the interior of the door frame in a double-opening type, rubber layers cover the door bodies, convex bodies are integrally fixed to the sides, at the door bodies, of the rubber layers, multiple gasbag strips are embedded in the rubber layers, one ends of the gasbag strips extend into the convex bodies, and the other ends of the gasbag strips are embedded intothe rubber layers at the peripheral sides of the door bodies. Aiming at the problem in the prior art that the impact resistance is insufficient, the rubber layers cover the surfaces of the door bodies for buffering and damping; meanwhile, since the gasbag strips are embedded into the rubber layers, the impact resistance of the rubber layers is effectively improved; besides, after the convex bodies are under impact, pressure can be transmitted to the ends, away from the convex bodies, of the gasbag strips, thus the surfaces of the rubber layers at the peripheral sides of the door bodies protrude and abut against the inner wall of the door frame, and the leakproofness between the door bodies and the door frame is enhanced.

Description

technical field [0001] The invention relates to the field of civil defense engineering, more specifically, it relates to a double-opening civil defense door. Background technique [0002] The door of the entrance and exit of the underground protection project is called the civil air defense door, and the civil air defense door belongs to the civil defense protection equipment. The classification of civil air defense doors is quite distinct, there are common single and double protective closed doors, single and double protective closed doors and airtight doors with living threshold and many other civil air defense equipment. [0003] For existing civil air defense door structure, as the patent publication number is the Chinese patent of CN205990858U, it discloses civil air defense door sealing structure, comprises civil air defense door body, metal door frame, upper track, lower track, and upper track is positioned at the top of metal door frame and is close to civil air defe...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of insufficient impact resistance in the prior art, the purpose of the present invention is to provide a double-open air defense door with good shock absorption and impact resistance

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