High anti-violence type underground refuge chamber blast airtight door
A technology for refuge chambers and airtight doors, which is applied to door leaves, anti-war damage, mining equipment, etc., can solve the problems of heavy product weight, high cost, and large steel consumption, and achieve structural integrity, enhanced tensile performance, and good Effect of flexural and tensile properties
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[0015] like Figure 1-2 as shown, figure 1 It is a schematic diagram of the back structure of a protective airtight door for a high anti-riot underground refuge chamber proposed by the present invention, figure 2 for figure 1 Middle A-A sectional view.
[0016] refer to Figure 1-2 , a kind of anti-violence type underground refuge chamber protective airtight door proposed by the present invention comprises an airtight door body 1, on the back of the airtight door body 1 is provided with a plurality of longitudinal reinforcing ribs 2 arranged in parallel at equal intervals, on the back of the airtight door body 1 A plurality of first transverse reinforcing ribs 3 on the same straight line are arranged in the middle, and a plurality of second transverse reinforcing ribs 4 on the same straight line are arranged on the upper and lower parts of the airtight door 1 body. The third transverse reinforcing rib 5 is arranged between the two transverse reinforcing ribs 4, and the di...
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