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简单的回顾二次世界大战前,西欧已有轨道式塔吊。当时塔吊大多是有门架的,属于50吨-米级左右的塔吊,拆装作业比较费时费事,并且需要辅助机械和设备,只有工期较长的大型工地才使用。国外塔吊的迅猛发展是在二次世界大战以后。1949年开始出现能自行架设和整体运输的10吨-米以下的新式轻型塔吊,这类塔吊顺应当时战后欧州重建家园的需要,满足施工单位的愿望,中小工地使用起来又比较经济,因此发展很快。
A simple review of World War II has orbital cranes in Western Europe. At the time, most of the tower cranes were gantry cranes. They belonged to tower cranes with a capacity of about 50 tons-meters. Disassembly and assembly operations were time consuming and involved, and required auxiliary machinery and equipment. Only large-scale construction sites with longer construction periods were used. The rapid development of foreign cranes was after the Second World War. In 1949, new light tower cranes with a capacity of 10 tons-meters or less that could be erected and transported on their own have begun to emerge. These tower cranes have met the needs of the reconstruction of their homes in post-war Europe and have met the wishes of construction companies. quickly.