Device assisting hull in launching

The invention relates to a device assisting a hull in launching. The device comprises a dragging rolling shaft group consisting of a plurality of long rolling shafts, wherein all the long rolling shafts are assembled into a whole through a rectangular frame, an air cushion air bag with the area larger than that of the rectangular frame is arranged on the rectangular frame, and the air cushion airbag is fixedly connected with the frame of the rectangular frame. The device is simple in structure, flexible in operation, low in manufacturing cost and good in actual use value. 本发明涉及一种船体下水辅助装置，具有由若干长滚轴组成的拖拽滚轴组，所有长滚轴都通过一个矩形框架组装成一个整体，在所述矩形框架上装有一个面积大于矩形框架的气垫气囊，气垫气囊与所述矩形框架的边框固定相连接；本发明结构简单，操作灵活，制作成本低，具有很好的实际使用价值。