首页>
外国专利>
Cargo-handling machine with 300-degree operational azimuth range for shipboard use
Cargo-handling machine with 300-degree operational azimuth range for shipboard use
展开▼
机译:船上使用方位角范围为300度的货物装卸机
展开▼
页面导航
摘要
著录项
相似文献
摘要
A double-topping type derrick crane is operable continuously throughout 300 degrees of azimuth turning of its boom to serve two loading areas forward and aft of the crane. This is made possible by a multiple-swivel, universal coupling mechanism between the two topping tackles and the boom top, this mechanism permitting one topping tackle to flip over the other, whereby the relative positions of the tackles are automatically inverted without mutual contacting or entwinement of the topping tackles.
展开▼