A kind of air defense door locking device

Abstract

This application relates to a locking device for civil air defense doors, which includes a locking mechanism. The locking mechanism includes a transmission shaft that rotates inside the door leaf; transmission gears are fixed at both ends of the transmission shaft; Rack; one end of the transmission rack is equipped with a lock that fits with the door frame; the middle of the transmission shaft is provided with a worm gear; the door leaf is rotated with a drive shaft; the drive shaft is provided with a worm meshing with the worm gear; Mechanism; the sealing mechanism includes a rotating shaft arranged on the outside of the door leaf and a sealing beam arranged on the rotating shaft; the driving shaft and the rotating shaft are connected through a synchronous assembly; the synchronous assembly includes a first pulley arranged on the driving shaft, and a rotating The connecting shaft, the second pulley arranged on the connecting shaft and the timing belt sleeved on the first pulley and the second pulley; one end of the connecting shaft is provided with a first bevel gear; the rotating shaft is provided with the first bevel gear meshing second bevel gear. The application has the effect of improving the locking efficiency of the air defense door.

Description

technical field [0001] The present application relates to the field of air defense doors, in particular to a locking device for air defense doors. Background technique [0002] Civil defense is also known as civil defense. Civil defense is an international general term. It is an activity in which the government mobilizes and organizes the masses, adopts anti-aircraft raids, disaster relief measures, implements rescue operations, prevents and mitigates disaster hazards. Civil defense doors are civil defense protection equipment. Meet the protection and sealing function requirements. [0003] The existing Chinese patent with the notification number of CN103266838A discloses a civil air defense door without threshold at the entrance and exit, which includes a door leaf, a door frame, a lock and a hinge. The sealing beam includes a hinge seat fixedly connected to the back of the door leaf, a rocker hingedly connected to the hinge seat, a flip beam fixedly connected to the rocke...

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor thinks that the upper and lower lock heads move up and down by locking the hand wheel to complete the locking and unlocking of the civil air defense door, and the sealing of the threshold also needs to control the flipping of the flip beam by turning the lifting handle. The door is sealed, and the sealing of the lock door and the threshold requires two operations, and the process is relatively cumbersome

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