起重机械是港口企业常用的设备,被广泛的应用于各种物料的起重、运输、装卸和人员输送等作业中。常用的港口起重机械有:悬臂式起重机、门座式起重机、龙门式起重机、桥式起重机等。由于高度大、覆盖面广、工地状况差、管理薄弱等原因,在起重机械的使用过程中,倾覆和坍塌等安全事故时有发生,造成大量的人员伤亡及重大经济损失。因此,起 Lifting machinery is a commonly used equipment for port enterprises, is widely used in a variety of materials lifting, transportation, handling and personnel transportation operations. Harbor crane commonly used are: cantilever cranes, gantry cranes, gantry cranes, overhead cranes and so on. Due to high altitude, wide coverage, poor working condition and poor management, safety accidents such as capsizing and collapse occur frequently during the operation of the crane, resulting in a large number of casualties and major economic losses. So, from