在高层建筑施工中,附着式长臂架小车变幅的塔式起重机得到了愈来愈广泛的应用,其施工面比一般的臂架增加很多,例如50米长的臂架施工面比30米臂架大1.8倍。另外,由于附着式塔机使用了长臂架,其大车行走机构可以省去,这样带来的好处,一是整机结构简化,制造成本降低,据初步分 In the construction of high-rise buildings, tower cranes with variable-width luffing trolleys have been increasingly used. The construction surface of the tower cranes has been increased more than the normal booms. For example, the construction surface of a 50-meter-long boom is more than 30 meters. The boom is 1.8 times larger. In addition, because the attached tower crane uses a long boom, the vehicle running mechanism can be omitted. The benefits of this are: First, the entire structure is simplified, and the manufacturing cost is reduced. According to preliminary points,