缆绳式桅杆起重机具有起重能力大、占地面积小、提升高度和工作幅度大及造价低等优点,广泛应用于工业厂房、桥梁及水工等建筑构件吊装工程。由于这类起重机结构简单、制作方便,不少施工单位都凭经验自制桅杆和臂架等结构件,配上卷扬机及绳索工具即可使用,但容易忽视设计计算工作。 The cable-type mast crane has the advantages of large lifting capacity, small floor space, high lifting height, large working range and low cost, and is widely used in the hoisting of building components such as industrial plants, bridges and hydraulics. Because such cranes are simple in structure and easy to make, many construction units rely on their own experience to make structural parts such as masts and booms, and can be used with hoists and ropes, but it is easy to neglect design calculations.