Out -of --way bolt system prevents falling

The utility model provides an out -of - -way bolt system prevents falling, includes stone material ceiling, back of the body bolt, fixing bolt, guard net and porous steel connection piece, its characterized in that: stone material ceiling center and both ends open and have out -of -the -way keyhole, stone material ceiling edge open and have the fixing bolt hole, stone material ceiling surface setup the guard net, back of the body bolt can guarantee that stone material ceiling mounting is firm, when the stone material ceiling met accident the fracture, guard net and porous steel connection piece can cushion the fracture situation, even the unable on -call maintenance of maintenance person person can not cause too big influence to the outward appearance of ceiling yet, reduced because of the stone material ceiling damages the injury to personnel condition that leads to at to a great extent simultaneously, the security is greatly promoted. 种防坠落背栓系统，包括石材天花板、背栓、固定用螺栓、保护网和多孔钢连接片，其特征在于：所述的石材天花板中心及两端开有背栓孔，所述的石材天花板边缘开