Integral lifting and sliding type protective airtight door

Abstract

An integral lift-and-translate protective airtight door, the hinges of which are fixedly connected to the upper shaft seat and the lower shaft seat respectively, the two seats are connected by bearings to lengthen the hinge shaft, and the upper and lower hinge plates are connected to the upper and lower seat plates The upper and lower moment balance translation supports are connected between them, one end of the upper and lower moment balance translation supports is connected with the pin shaft of the upper and lower connecting seat plates, and the other end of the upper and lower moment balance translation supports is sleeved on the extended hinge shaft. There is a gap between the upper and lower torque balance translation bearings and the hinge shaft seat, and between the pin hole of the upper and lower torque balance translation bearings and the pin shaft of the connecting seat plate. The jack lifting device is set between the upper hinge and the lower hinge, and the square head at the lifting end is supported in the bearing groove of the load-bearing translation seat. There is a gap between the square head at the lifting end and the wall of the groove, and the inner wall of the groove has a Concave raceway with balls embedded in the raceway. It solves the problems of protection and airtightness caused by large spans, large longitudinal slopes, and large slopes, and can be widely used in protection projects.

Description

(1) Technical field [0001] The invention relates to protective equipment for protective engineering, in particular to a protective airtight door for tunnel entrances and exits in subway civil air defense engineering. (2) Background technology [0002] The protective equipment of the subway civil air defense project has the functions of air defense in wartime and disaster prevention in peacetime. If the needs of civil air defense are taken into account during construction, planning, design, and construction are unified, and key parts and important facilities are well protected, the subway can be used as the main traffic artery of the city in normal times, and it can also become the main road for evacuation of urban civil air defense in wartime. Personnel shelter and material storage. Under the predicted urban secondary disasters during and after the attack of nuclear weapons, chemical weapons, and conventional weapons, the safety of personnel and equipment is guaranteed, and...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an integral lifting and translational protective airtight door, which solves the problem of the door leaf realizing the overall translation and maintaining effective sealing; it also solves the problem of difficult sealing caused by the large height difference and large longitudinal slope in the sweeping width of the door leaf; and Solve the problem of uneven compression of the rubber strips on both sides of the door frame caused by the excessive width of the door leaf

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