Threshold-free civil defense door of doorway

Abstract

A threshold-free civil defense door of a doorway comprises door leaves, a doorframe, a lock and a hinge. A sealing beam and a sealing beam lifting mechanism are arranged under each door leaf, and each sealing beam is a turning type sealing beam and comprises a hinge base fixedly connected onto the back surface of the corresponding door leaf, a rocker hinged to the hinge base, a turning beam fixedly connected onto the rocker, a ground sealing member fixed on the turning beam and matched with the ground and a door leaf sealing member fixed on the turning beam and matched with the corresponding door leaf. Each sealing beam lifting mechanism comprises a reversed-L-shaped vertical connection rod, a crank, a shaft base, a bearing, a sealing beam lifting mechanism transmission shaft, a reversing speed changer and a sealing beam lifting handle. The threshold-free civil defense door of the doorway facilitates passing in ordinary time due to the fact that no above-ground threshold is arranged, can be closed in place fast in war so as to achieve functions of protection and closeness, is suitable for protection and closeness of the doorway of civil defense staff and vehicles and has the advantages of being reasonable in structure, convenient to use, easy to operate, flexible to open and close, economic and practical and convenient to maintain.

Description

technical field [0001] The invention relates to a civil air defense door applied at the entrance and exit of civil air defense projects. Background technique [0002] Civil air defense projects are generally combined peacetime and wartime projects. In normal times, a large number of personnel and equipment come in and out. During wartime, the civil air defense doors at the entrance and exit need to be closed to prevent shock waves and poisonous gases from entering the civil air defense project. In order to ensure that the civil air defense doors at the entrance and exit can withstand the shock wave during wartime, the civil air defense doors generally have a threshold protruding from the ground to withstand the shock wave pressure on the door leaf, but this threshold brings great pressure to the access of people and vehicles at ordinary times. the inconvenience. [0003] In order to facilitate the access of a large number of people and vehicles at ordinary times, there are...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-threshold civil air defense door at the entrance and exit, to solve the technical problem that the existing civil air defense door will bring great inconvenience to the usual personnel and vehicles.

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