【摘要】 耙头是耙吸式挖泥船的挖泥工具,也是水库机械清淤的常用工具。本文对国内外14种纯吸式耙头进行了室内研究,探讨在底料条件不变时,耙头构造、吸入功率、移动速度等因素对吸入性能的影响,就吸缝高度、移动方式、摩擦块对提高耙头吸入性能的作用和原因进行了分析。通过试验筛选出3种吸入性能较佳的耙头。更多还原

【Abstract】 Drag head is a tool on trailing hopper suction dredge for excavating slu- dge and is also used for cleaning away sludge in reservoirs.In this paper,the authors studied indoors fourteen types suction type drag head in common use that very year in our country.Discussed the influence of the drag head structure,drawing power,moving velocity to the drawing characteristics when the channel bed materials condition is the same.Particularly analized the crack height、moving way、the reason and effect of friction lump to improve the drawing characteristics.Through the experiments three types of good function drag head were discovered,which can be used for reference in designing and choosing drag head.更多还原