A liftable sail with ball sliding mechanisms is provided with a fixed mast fixed on a sail base, a sliding mast is nested in the fixed mast, the sliding mast ascends and descends relative to the fixed mast, and a plurality of ball sliding mechanisms are fixed in the circumferential direction of the fixed mast and the sliding mast at equal intervals. The first ball guide rail is fixed to the inner surface of the fixed mast, a first groove which is sunken downwards is formed in the surface of the first ball guide rail, the second ball guide rail is fixed to the outer surface of the bottom of the sliding mast, a second groove which is sunken downwards is formed in the surface of the second ball guide rail, and a second ball is arranged in a circular cavity formed by the first groove and the second groove. According to the invention, low resistance in the lifting process of the sail device, especially in the sail lifting process, is realized, and the device has important significance for reducing the load of a mast lifting driving unit; the structural strength and the system safety of the sail device are guaranteed, and meanwhile the reliability of the sail lifting system is improved.
一种带有滚珠滑动机构的可升降风帆,有固定在风帆基座上的固定桅杆,固定桅杆内部嵌套有滑动桅杆,滑动桅杆相对固定桅杆上下升降,沿固定桅杆、滑动桅杆周向,等间距固定有多个滚珠式滑动机构。第一滚珠导轨固定在固定桅杆的内表面上,第一滚珠导轨表面带有向下凹陷的第一凹槽,第二滚珠导轨固定在滑动桅杆底部的外表面上,第二滚珠导轨表面带有向下凹陷的第二凹槽,第二滚珠一凹槽与第二凹槽形成的圆形腔内。本发明内容实现了风帆装置升降过程尤其升帆过程的低阻力化,对于降低桅杆升降驱动单元的负荷具有重要意义;保证风帆装置结构强度、系统安全性的同时,提高了风帆升降系统的可靠性。
Liftable sail with ball sliding mechanism
一种带有滚珠滑动机构的可升降风帆
2023-01-17
Patent
Elektronische Ressource
Chinesisch
Liftable sail with double-layer polygonal mast structure
Europäisches Patentamt | 2023
|