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在露天场地工作的有轨式起重机,如门式起重机、装卸桥、门座和塔式起重机等,都广泛应用于海港、铁路系统、物资储运、电厂、林业、工厂和建筑等部门,从事着物料搬运和装卸作业。其主要特点:一是外形尺寸高大,具有较大的挡风面积;二是工作在室外空旷开阔场地,所以非常容易受大风吹袭,造成灾害也很严重。最典型的是锦西铁路货场1991年9月18日,20T×22M桁架结构门式起重机。处于工作间歇时间,正停在200m长轨道中段,司机在操作室休息,突然刮起龙卷风(据当地气象台报为9级,据
Rail cranes working in open-air venues, such as gantry cranes, loading and unloading bridges, door hangers and tower cranes, are widely used in seaports, railway systems, material storage and transportation, power plants, forestry, factories and construction sectors. Material handling and loading and unloading operations. Its main features: First, large size, with a larger area of wind; Second, work in open and open outdoor venues, it is very vulnerable to wind strikes, causing disasters is also very serious. The most typical is Jinxi Railway Yard 1991 September 18, 20T × 22M truss gantry crane. In the work of intermittent time, is stopped in the middle section of 200m long track, the driver rest in the operating room, suddenly blowing a tornado (according to the local weather station reported 9, according to