A concrete protective door and its production process

Abstract

The invention relates to a concrete protective door and a production process thereof, which comprises a door frame and a door panel, a hinge device and a door bolt device are connected between the door frame and the door panel, and the door bolt device includes a fitting groove in the door frame and a The lock tongue in the lock tongue is connected with a drive assembly that makes one end of the lock tongue slide in the fitting groove; the door panel is provided with a guide slideway for placing the lock tongue, and the guide slideway One end is connected to one end of the door panel and corresponds to the position of the fitting groove; one end of the door panel facing the fitting groove has a placement cavity, the placement cavity communicates with the guide slide, and a buffer mechanism is provided in the placement cavity, The buffer mechanism includes a bearing frame, a buffer piece and a pressure bearing plate. One side of the pressure bearing plate is connected to the buffer piece and the other side is in conflict with the side wall of the lock tongue. The present invention has the effect that the dead bolt is easily reset by the staff member turning the dead bolt internally through the driving assembly.

Description

technical field [0001] The invention relates to the technical field of air defense protection equipment, in particular to a concrete protection door and a production process thereof. Background technique [0002] The civil air defense project is an important facility to prevent the enemy's sudden attack, effectively shield personnel and materials, and preserve the potential for war; it is an engineering guarantee to persist in urban battles and support the anti-aggression war for a long time until victory; the protective doors of the entrances and exits of such projects are anti-explosion and protective It is an important barrier to ensure the safety of the internal space of the project. [0003] The protective doors of the entrances and exits of civil air defense projects are usually constructed of reinforced concrete, which can resist the shock wave generated by the explosion. [0004] The existing protective door includes a door frame, a door panel, a hinge device and a ...

AI Technical Summary

Problems solved by technology

When the door panel of the protective door is subjected to a large impact load, the position between the door panel and the door frame is mainly limited by the lock tongue and the hinge device, the lock tongue bears a large shear force, and the lock tongue located in the fitting opening is prone to deformation , so that during the opening process of the door bolt device, the deadbolt is stuck at the joint between the door frame and the door panel, the deadbolt is not easy to reset, and the door bolt device cannot be used normally, which leads to the fact that the protective door originally used to protect people and materials will cause damage. Rescue is difficult and even endangers people's lives

Images