People's air defense protective airtight door

• Main Authors: LI MAN, ZHAO HUIYONG, WEI TAO, GUO YANWEI, LI HAOBIN, ZHANG BAISUI, FU DAXI, XU FEIYUAN, AN FENGLEI, QI QIANG, RUAN FEIPENG, XIE LIANGPING, WU DONG, HU XIAOWEI, RUAN JINLOU, QI DEYUN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS ORWINDOWS; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; KEYS; LADDERS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS

The utility model discloses a people's air defense protective airtight door belongs to people's air defense equipment technical field, and aim at provides a people's air defense protective airtight door, solves the poor problem of current people's air defense protective airtight door locking reliability. It includes the protective airtight door body, install locking device on the protective airtight door body, locking device is including all installing this internal gear, rack at protective airtight door, the wheel and rack meshing, the other end of rack is connected with the tapered end, thetapered end hole that the tapered end of being convenient for passes through is seted up to protective airtight door body side, gear middle part is connected with the transmission shaft, and the otherend of transmission shaft is connected at the surperficial driving -disc of protective airtight door body with installing, this internal still installing of protective airtight door is used for preventing the rot. Safety mech