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80吨米筒体自升塔式起重机系我所和上海市第四、七建筑公司等单位协作完成的。该机由底座及行走台车、筒形塔身、下平台、套架及中平台、转台及臂架共六大部分组成。传动则分为起升机构、变幅机构、回转机构、行走机构、顶升机构和平衡重移动机构等。塔身为圆筒体,直径分别为1.1米和1.2米,用 A_3钢板轧圆焊接而成。筒内有加强圈和加强肋板,并装有爬梯供人员上下用。上下端为带凹凸肩的联接法兰圈,以
The 80-ton cylinder self-elevating tower crane was developed in collaboration with the fourth and seventh construction companies in Shanghai. The machine consists of a base and a walking trolley, a cylindrical tower body, a lower platform, a frame and a middle platform, a turntable and a boom. The transmission is divided into a lifting mechanism, a luffing mechanism, a turning mechanism, a traveling mechanism, a jacking mechanism, and a counterweight moving mechanism. The tower body is a cylinder with a diameter of 1.1 meters and 1.2 meters, respectively, and is made by round welding of A3 steel plates. The cylinder has a reinforcement ring and stiffening ribs, and a ladder is provided for personnel to use up and down. Upper and lower ends are flanged flanges with convex shoulders.