安全机构怎么不安全了张志敏１０吨交流桥式起重机工厂常见的一种起重机械。它有多种保护功能，例如，为了保障维修人员的安全，在驾驶室舱盖门及横梁栏杆门上都装有安全开关，其常开触头与主接触器线圈相串联，若有人从驾驶舱门或大车两端跨入桥架，安全开关将随着门的开... How insecure security agencies Zhang Zhimin 10 tons of AC bridge crane factory common kind of crane. It has a variety of protection functions, for example, in order to protect the safety of maintenance personnel, in the cabin door and the railings railing door are equipped with safety switches, the normally open contact with the main contactor coil in series, if someone from driving Cabin or cart into the bridge at both ends, safety switch with the door open ...