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多层房屋施工中,广泛应用门式提升架做为提升设备。门式提升架的安全杠,通常采用两根钢管代替,将钢管放在与提升架联接的脚手架横杆上,由人工拨动。每楼层位置上均需设置两根钢管,而且钢
In the construction of multi-storey houses, gate lifts are widely used as lifting equipment. The safety bar of the portal lifter is usually replaced by two steel pipes. The steel pipe is placed on the scaffold cross bar connected with the lift frame and manually toggled. Two steel pipes need to be installed on each floor and steel