An explosion-proof wave people-proof door

Abstract

The invention discloses an explosion-proof air defense door, which comprises a door frame embedded in the wall, a door body inside the wall, a first rotating part on the door frame to open and close the door body, and a The explosion-proof wave structure on the door body, the bolt structure for fixing the door body, the concrete layer filled inside the door body; the material formula of the concrete layer is: the material formula of the concrete layer is: 425 ordinary cement, water-cement ratio 0.41, crushed stone particle size 10~30mm³, medium coarse sand; materials for each cubic concrete: 482kg of cement, 200kg of water, 0.45m³ of medium coarse sand, 0.79m³ of crushed stone; The adjustment of the internal concrete ensures that the concrete poured in the door can spread all over the door, avoiding the appearance of pouring dead corners, and the small shrinkage ensures that the concrete can be closely attached to the inner wall, and at the same time ensures the strength of the concrete, thus effectively The overall anti-extrusion ability of the door body is improved, and the durability is strong to ensure the service life of the civil air defense door and reduce maintenance costs.

Description

technical field [0001] The invention belongs to the technical field of civil defense, in particular to an explosion-proof wave civil defense door. Background technique [0002] In the civil air defense project, the civil air defense door has always occupied a relatively large proportion, and it has always been the direction that people pay more attention to. In the daily use of the civil air defense door, its strength needs to be guaranteed, and the most important part of the civil air defense door is its resistance. However, in the process of concrete pouring, gaps often occur during the filling process of concrete, or the contact between the concrete and the inner wall of the door is not firm and does not fit after filling, which leads to the overall defense effect of the civil air defense door. Poor, and even the internal concrete cannot meet the specified strength requirements when receiving an impact, resulting in deformation of the door body, unable to withstand all im...

AI Technical Summary

Problems solved by technology

[0002] In the civil air defense project, the civil air defense door has always occupied a relatively large proportion, and it has always been the direction that people pay more attention to. In the daily use of the civil air defense door, its strength needs to be guaranteed, and the most important part of the civil air defense door is its resistance. However, in the process of concrete pouring, gaps often occur during the filling process of concrete, or the contact between the concrete and the inner wall of the door is not firm after filling, and the overall air defense door defense effect is poor. Poor, even the internal concrete cannot meet the specified strength requirements when receiving an impact, resulting in deformation of the door body, unable to withstand all impacts, and personal safety cannot be guaranteed. If it is replaced, the cost will be greatly increased

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