Considering the opening and closing failure of the grab bucket of the ship unloader and inaccurate positioning due to the hanging of the steel wire rope,taking a 2 500 t/h electric differential four-drum bridge grab ship unloader as the research object,based on the suspension cable theory,the relationship between the cable length and the cable tension at both ends of the same height and unequal height,as well as the expressions of sag and central deflection were established,and the key parameters were quantitatively analyzed.Finally,the angular displacement of the opening and closing drum on both sea and land sides and the rotational angular displacement of the opening and closing drum required for opening the grab bucket at any position were obtained by Simulink module in Matlab,which provides a theoretical basis for the researches on the positioning and opening and closing control of the grab bucket of the ship unloader in the future.
关键词
卸船机/悬索理论/抓斗开闭/卷筒角位移
Key words
ship unloader/suspension cable theory/grab bucket opening and closing/angular displacement of drum
维普
万方数据