A cement door for building civil air defense engineering

Abstract

The invention discloses a cement door for civil air defense engineering of a building. The cement door includes a cement door body, the cement door body is arranged in a transversal wall, one side ofthe cement door body is provided with a door pivot, the two sides of the transversal wall are fixedly provided with a longitudinal wall, the inner wall of the cement door is provided with a lock rotating disk, a rotating-disk connection rod stretches into a lock cylinder chamber and the lock cylinder chamber is arranged in the cement door body; the bottom of the side of the cement door body is fixedly provided with a supporting bottom column, the two sides of the supporting bottom column are fixedly provided with rope fixing frames, the bottom of the supporting bottom column is fixedly provided with a slide block, the slide block is clamped in a revolving-door guide rail, a pulley set chamber is arranged in the bottom of the transversal wall, and a fixed pulley set, a movable pulley set and a deflecting pulley are arranged in the pulley set chamber; the tail end of a traction rope is fixed on a coil pulley in a winding mode, the coil pulley is slidingly arranged on a coiling roller, the coiling roller is fixedly connected with a rotating disk on the upper portion through a connection rod, and the outer edge of the top surface of the rotating disk is fixedly provided with a crank. Pull force used for opening or closing the door is reduced through several pulley sets, and the cement door can be easily opened and closed.

Description

technical field [0001] The invention relates to a building facility, in particular to a cement door of a building civil air defense project. Background technique [0002] The civil air defense door is the door of the entrance and exit of the civil protection project. The classification of civil air defense doors is relatively clear. There are ordinary single and double protective airtight doors and airtight doors, and a variety of civil air defense equipment such as single and double protective airtight doors and airtight doors with living thresholds. The government mobilizes and organizes the masses, adopts anti-aircraft raids, disaster relief measures, implements rescue operations, prevents and mitigates disaster hazards, and often transfers the masses to civil air defense projects. Civil air defense doors have become an important structure in civil air defense projects. [0003] Civil air defense doors may be subject to huge impacts from external forces during geological ...

AI Technical Summary

Problems solved by technology

[0003] Civil air defense doors may be subject to huge impacts from external forces during geological disasters or wars. Therefore, many civil air defense doors use cement doors made of steel frame cement to improve the damage resistance and deformation resistance of civil air defense projects. However, cement doors are generally The door has a large mass, and it is very laborious to turn. It is often difficult for one person to turn and open the door. Many people can cooperate to open or close the door smoothly. Therefore, we need a cement door that can be easily turned and opened.

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