ZT—120自升塔式起重机(下称120塔机)目前已生产了几十台。近年来随着高层建筑的发展,层数增高,附着式使用日趋增多。我们在上海宾馆主楼施工时,120塔机塔顶高达112米,附着系统共4道,大臂铰点高105米,为了满足工程施工需要和塔机自身装拆的方便,在该工地南北二台塔机分别试行了先行走后附着和先附着后行走的方式,考 ZT-120 self-elevating tower crane (hereinafter 120 tower crane) has produced dozens of units. In recent years, with the development of high-rise buildings, the number of floors has increased and the number of attached uses has increased. When we were constructing the main hotel in Shanghai, the top of the 120 tower cranes was 112 meters high, with a total of four attachment systems and a 105-meter high boom hinge point. In order to meet the construction requirements and facilitate the installation and removal of the tower cranes, the construction site was erected at the site. The tower cranes were respectively tested on the way they walked first and then walked on and then walked on.