在许多大中型企业及铁路运輸部门的露天场地里,广泛使用着龙门起重机。这种龙门起重机大多设计安装有手动机械式夹轨器,以防止起重机在遇到大风时,被风吹移造成碰撞、掉轨或倾翻的事故。然而,由于起重机操作人 Gantry cranes are widely used in the open spaces of many large and medium-sized enterprises and rail transport departments. Most of these gantry cranes are designed and equipped with manual mechanical rail clamps to prevent the crane from being hit by a wind blow resulting in a collision due to a windy wind, a rail accident or a rollover. However, due to the crane operator