普通井架塔吊价格低,安装方便,但是加固塔吊时需要用缆风绳,这些缆风绳被人们称为“辫子”。正是这些“辫子”成为塔吊起吊的障碍,降低了起吊工效。青岛建筑机械第二制修厂研制成功的无缆风绳井架塔吊,除保持了有缆绳井架塔吊的机械性能外,还具有 Ordinary derricks are cheap and easy to install, but they need to be cabled when the tower cranes are being reinforced. These cables are known as “tweezers”. It is these “scorpions” that become obstacles to the lifting of the tower crane and reduce the ergonomics of lifting. The successful development of the Qingdao Construction Machinery No. 2 Manufacturing Plant, the cable-free airline rig tower crane, in addition to maintaining the mechanical properties of the cable mast tower crane, also has