Reaserch the relations between at luffing course of horizontal movement and jib system organization's static stressing, as well as to improve the analyses means of design software of these same crane.
探寻物品在变幅过程中水平移动与臂架系统结构静态受力之间的关系，研究臂架自重平衡系统的设计与臂架系统动力响应之间的关系以及对改善该类门机的设计软件的分析手段。
A new-type quayside container crane with jib-bridge luffing system as the main working part is brought out.
提出一种以臂桥架变幅系统为主要工作机构的岸边集装箱起重机。
This paper presents the main types and features of luffing mechanisms of goose neck jib lorry loading cranes and proposes design requirements for 304304 type luffing mechanism.
介绍了随车起重机变幅机构的主要形式和特点，提出304304型变幅机构在设计时的要求。
A luffing extension-jib was installed on top of the carriage with a telescopic nacelle.
在方舱上安装由液压系统控制的可升降伸缩旋转吊臂； 在吊臂顶端安装有可折叠吊篮。
A luffing extension-jib was installed on top of the carriage with a telescopic nacelle.
在方舱上安装由液压系统控制的可升降伸缩旋转吊臂； 在吊臂顶端安装有可折叠吊篮。
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