分析我国规范对推拉式防火门的限制,介绍其他国家的规范要求.介绍一种新型的推拉式防火门,能克服悬挂砝码、电动驱动方式的缺陷,采用机械方式驱动滑轮.钟摆式悬吊系统所需开启力较小,可防止受挤压时的滑轨变形,可靠性较高.减速制动装置可以避免失速造成夹伤人员.关闭时引拉装置将门扇推向边框,防烟性能强.该门占地少、避免门扇对楼梯内人员的二次伤害,适用于竖井分隔和有无障碍要求的场所.%Restrictions of the horizontal sliding fire doors when rnbe used for mean, of escape by the code of design on building rnfire protedction of China were discussed, meanwhile some other rncountries' fire code or building standards on sliding Fire doors rnwere introduced. The newly developed horizontal sliding fire rndoors have overcome the defects of weight - hanging or power rn-operated systems due to the using of hanger- rollers. The rnhangine of doors also makes a pendulum morion to realize less rnopening force and prevent deformation of rails. To protect the rngeneral public's access. the system equips with a braking device rnto control closing speed. On smoke-control, the closing devices rncan draw and press door panel to framcs to decrease the spaces rnbetween them. Because of horizontal sliding doors' straight rnmovement, they could save spaces and be regularly used in verrntical shaft fire partition. Furthermore, borizontal sliding doors rngenerally need not a door sill, so can realize barrier- free design rnin modern buildings easily.
展开▼
