小车变幅塔式起重机的回顾与展望  

14 Retrospection and expectation of trolley-jib tower crane

作　　者：梅琨 

出　　处：《建筑机械化》2007年第9期14-17,4,共4页Construction Mechanization

摘　　要：1 历史回顾 在塔机的百年历史中，最早出现的塔机型式是动臂式，无论是国外的Liebherr、Potain，还是中国均如此。由于技术的局限性，直到上世纪五六十年代，动臂式塔机很少能带载变幅，故大部分要靠在轨道上行走来改变吊装物的水平位置，这一致命的缺点使动臂式塔机后来很长一段时间被挤出建筑市场，代替它的是我们现在十分熟悉、流行的小车水平变幅塔机。During the 100-year history of tower crane, the earliest model appeared in the world was luffing jib, either at home and abroad. Because of the limitations of technique, luffing jib tower crane could not change radius with load until 1950s. In most cases it was needed to moving lifting load horizontally by moving on the orbit, luffing jib tower crane was replaced for a long time subsequently for as much as this deadly shortcoming. The winner is trolley-jib crane which is famous and be- ing known well.

关 键 词：塔式起重机 水平变幅 小车 动臂式塔机 展望 水平位置 建筑市场 历史 

分 类 号：TH213.3[机械工程—机械制造及自动化]