Concrete civil air defence door and processing technology

Abstract

The invention relates to a concrete civil air defence door which comprises an outer door frame pre-buried in a wall and a door body assembly rotatably connected to the inner side of the outer door frame. The door body assembly comprises an outer door plate, a mounting rack arranged on the inner side face of the outer door plate and an inner door plate detachably connected to the mounting rack; a hinge seat arranged on one side of the outer door frame is connected to the mounting rack through a hinge shaft; the mounting rack comprises a bottom beam fixed to the bottom edge of the outer door plate, side beams fixed to the two side edges of the outer door plate and a top beam connected to the top edge of the outer door plate. The bottom beam, the side beams and the top beams form the mountingrack of a rectangular frame structure. The inner door plate comprises a plurality of concrete plates which are embedded into the mounting rack from top to bottom, and weight-reducing holes penetrating upper and lower end surfaces are formed in the concrete plate bodies. By splitting the concrete civil air defence door into a plurality of modules which are processed segmentally and transported toa mounting site to be assembled, the transportation difficulty and the mounting difficulty are reduced.

Description

technical field [0001] The invention relates to the technical field of civil air defense equipment, in particular to a concrete civil air defense door and its processing technology. Background technique [0002] At present, underground protection projects are also called civil air defense fortifications, which refer to underground protective buildings built separately to protect personnel and material shelter, civil air defense command, and medical rescue in wartime, as well as basements built in combination with ground buildings that can be used for air defense during wartime. The door of the entrance and exit of the underground protection project is called the civil air defense door. Among the many types of civil air defense doors, the reinforced concrete civil air defense door is widely used. The control type of its opening and closing is mainly the manual control type, that is, the civil air defense door is a manual door. As a closed civil air defense door, the reinforce...

AI Technical Summary

Problems solved by technology

The processing technology of reinforced concrete civil air defense doors is usually processed and produced in a processing factory, and then transported to the installation site for installation. This reinforced concrete civil air defense door has a heavy structure and is not easy to disassemble, which affects the safety and efficiency of transportation and installation.

Images