To solve the problems such as inefficient,high cost of manufacturing and maintaining existing in telescopic sleeve of crane in QT-building,the paper improved the design of anti-swing device.The improved device avoided the prob-lems of telescopic sleeve,and has the advantage of simple structure and convenient manipulating,It can reduce the costs of purchasing and promote efficiency with high reliability and practical value.%针对 QT库吊车伸缩套筒防摆装置，存在工作效率低和制造维护成本高等问题，对防摆装置进行改进设计。其改进后不仅能避免伸缩套筒带来的上述问题，而且结构简单，操作方便，降低了吊车采购成本，提高了工作效率，具有较高的实用价值。
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