一起塔机坠落事故的原因分析王汉猷吴肇典王安华（江苏省南通市第七建筑公司）１９９３年４月，我公司一分公司从江苏省连云港市起重机械厂购进一台ＱＴＺ－８０自升式起重机，用于黑龙江省齐齐哈尔市民航售票厅大楼现场工地（该工程位于齐齐哈尔市中心广场东北侧，１６层... An Analysis of the Causes of a Tower Crane Fall Accident Wang Hanxi Wu Yindian Wang Anhua (the seventh construction company of Nantong City, Jiangsu Province) In April 1993, a branch of our company purchased a QTZ-80 self-elevating type from the crane machinery factory in Lianyungang City, Jiangsu Province. The crane is used for the site construction site of the Qiqihar Public Transport Ticketing Office Building in Heilongjiang Province (the project is located in the northeast side of Qiqihar City Square, 16th floor...