Barrier-free passage civil air defense door of civil air defense engineering entrance

Abstract

The invention relates to a barrier-free passage civil air defense door of a civil air defense engineering entrance. The barrier-free passage civil air defense door comprises a door leaf, a door frame,hidden closing locks and dual-axis double hinges. The lower portion of the door leaf is provided with sealing beams and sealing beam lifting mechanisms. The sealing beam lifting mechanisms comprise inverted-L-shaped vertical connecting rods, cranks, shaft seats, bearings, sealing beam lifting mechanism transmission shafts, double-inlet and double-outlet reversing reducers and sealing beam liftinghandles. The double-inlet and double-outlet reversing reducers are arranged in the middles of the sealing beam lifting mechanism transmission shafts, and rotating arms are arranged in the hidden closing locks. According to the civil air defense door, a sill protruding out of the ground is omitted, passage at ordinary times is facilitated, quick closing in position can also be achieved in wartime,and the protection and airtight functions are achieved. The barrier-free passage civil air defense door is suitable for protection and airtight of the civil air defense engineering personnel and vehicle entrance, the problem of unbalanced stress of the beams and lock heads is solved, the stress is uniform, opening and closing are flexible, and operation is convenient.

Description

technical field [0001] The invention relates to a civil air defense door applied at the protection section of the entrance and exit of a protection project, and belongs to the technical field of protection engineering. 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...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a civil air defense door for barrier-free passage at the entrance and exit of a civil air defense project, so as to solve the technical problems of unbalanced force on the beam of the existing civil air defense door, inconvenient locking operation, and uneven force

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