井字架吊篮是建筑工地常用的垂直起重设备。由于工程施工工期长,井字架长期露晒在外,角钢容易生锈,钢丝绳也容易脱油起毛,如不经常检查维护,容易发生事故。这里介绍二种井字架安全自锁装置:A型适用于井字架内吊篮,B型适用于井字架外吊篮,虽然它们用于 The derrick hanging basket is a vertical lifting device commonly used in construction sites. Due to the long construction period of the project, the long-standing exposure of the derrick frame will cause the horns to rust, and the steel wire ropes will be easy to get rid of oil and fluff. If they are not checked and maintained frequently, accidents may occur easily. Here are two types of derrick safety self-locking devices: type A is suitable for hanging baskets inside derricks, and type B is suitable for derrick outside baskets, although they are used in