Double-leaf steel structure arch pulling plate protective air-tight door and air-tight method thereof
A technology for airtight doors and arch-drawing panels, which is applied to door leaves, hinged panels, windows/doors, etc., can solve the problems of difficult construction, poor airtightness of protective doors, and low resistance of protective airtight doors, and achieve weight reduction and simplified structure , The effect of simplifying the structure of the door frame
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[0046] Such as Figure 1-Figure 15 As shown, the protective airtight door of the present invention with a double-leaf steel structure arched plate includes a door frame, left and right double-opened arched door leaves 3 and a locking system, the door frame includes a fixed door frame 1 and a detachable living threshold 2, each arch Shaped door leaf 3 is provided with a cover locking system.
[0047] A sealing groove 18 is arranged on the outer surface of the door frame, and a sealing rubber strip is embedded in the sealing groove 18, so that the arched door leaf 3 can be squeezed and expanded to seal when the door leaf 3 is closed.
[0048] Such as figure 2 As shown, the door frame 1 is surrounded by an upper door frame 11, a left door frame 12, and a right door frame 13. The upper door frame 11 is an angle steel, and a bent anchor bar 14 is arranged obliquely upward for connection and reinforcement with the main structure of the passage, so as to improve The connection str...
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