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某单位在冷却塔施工中使用1台郑州机械设计研究所的ZTQ240自升式塔机(折臂塔机)和1台升降机配合进行塔筒的施工。ZTQ240自升式塔机最大起重量8t,最大起升高度142.2m(折臂工况),折臂高度范围3.5～26m。因该塔机的起重臂能够折臂,所以在双曲线冷却塔的施工中,不受塔筒曲线变化的影响。当塔身高度一定时,通过折臂提高塔机的施工高度,满足塔筒向上施工;在施工完成后不因冷却塔的“喉部”半径小
A unit in the cooling tower construction using a Zhengzhou Institute of Mechanical Design ZTQ240 jack-up tower crane (tower arm tower crane) and a lift tower tower construction. ZTQ240 self-elevating tower crane maximum lifting capacity of 8t, the maximum lifting height of 142.2m (folding arm conditions), folding arm height range of 3.5 ~ 26m. Because the tower crane boom can be folded arm, so in the construction of hyperbolic cooling tower, tower curve from the impact of changes. When the height of the tower is fixed, the construction height of the tower crane is increased by the folding arm to meet the upward construction of the tower. After the construction is completed, the radius of the “throat” of the cooling tower is not small