3 load value<br>The structural importance coefficient of aluminum alloy truss is set as 1.1, the load nonuniformity coefficient is set as 2.0, the safety coefficient of electric chain hoist and other hoisting equipment is set as 3.0, and the safety coefficient of rigging is set as 9.0.<br>3.1 dead load<br>(1) The dead weight of camera and auxiliary equipment is F1 = 60kg, and the dead weight of fixed steel suspender is F2 = 10kg.<br>(2) The self weight of 450x450 aluminum alloy truss is Q1 = 10kg / m, and that of 450x710 aluminum alloy truss is Q2 = 15kg / m.<br>(3) The self weight of camera horizontal positioning system is Q3 = 5kg / m.<br>(4) The self weight of electric chain hoist and chain is F3 = 15kg, and the maximum load is 500kg.
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