在毛主席革命路线指引下,我国第一台80吨米筒体自升塔式起重机胜利制成,并已经在高层工地上投入生产试用(见图1)。80吨米筒体自升塔吊由上海市各土建公司、门窗加工公司和上海市建筑科学研究所等单位共同组成以工人为主体现场设计小组来承担设计,并由上海市第四建筑工程公司机修 Under the guidance of Chairman Mao’s revolutionary route, China’s first 80-ton cylinder self-elevating tower crane was successfully built and put into production trials on high-rise sites (see Figure 1). The 80-ton cylinder self-elevating tower crane is composed of Shanghai civil engineering companies, door and window processing companies, Shanghai Institute of Building Research, and other units. The workers are the main site design team to undertake the design and are repaired by Shanghai No. 4 Construction Engineering Company.