The invention belongs to the technical field of helicopter components, and discloses a method for reducing the torsional rigidity of a tension-torsion strip, tension-torsion assemblies wound on a metal lining are arranged separately, gaps are formed between the tension-torsion assemblies and between the tension-torsion assemblies and the two side walls of the metal lining, so that the torsional deformation of the single-strand tension-torsion assembly is not affected by the adjacent tension-torsion assemblies, and the torsional rigidity of the tension-torsion strip is reduced. And the transverse acting force between the tension-torsion assemblies under the torsional load is reduced. According to the method, the torsional rigidity can be reduced, the torsional load transmitted to the propeller hub is reduced, and meanwhile the weight of the structure is reduced. The problems that in the prior art, due to the fact that multiple layers of tension and torsion strips are pressed together through mold pressing, the lengths are possibly inconsistent, the stress between different sheet layers is greatly different, loads borne by part of the tension and torsion strips are increased, and the tension and torsion strips are damaged in advance are solved. According to the tension-torsion strip prepared through the method, different tension-torsion assembly materials can be combined, tension-torsion strip products with different rigidity grades are obtained, and the application range is wide.
本发明属于直升机部件技术领域,公开一种降低拉扭条扭转刚度的方法,将缠绕在金属衬套上的拉扭组件分隔设置,其拉扭组件和拉扭组件、拉扭组件和金属衬套的两侧壁产生间隙,使单股拉扭组件的扭转变形不受到相邻拉扭组件的影响,降低拉扭组件之间受到扭转载荷时的横向作用力。本发明的方法可以降低扭转刚度,降低传递到桨毂的扭转载荷,同时降低结构的重量。解决了现有技术中由于多层拉扭条模压在一起,可能出现长度不一致的情况,会导致不同的片层之间受力有较大的差别,一部分拉扭条的承受的载荷加大,导致拉扭条提前破坏的问题。本发明方法制备拉扭条,可以组合不同的拉扭组件材料,获得不同刚度等级的拉扭条产品,适用范围广。
Method for reducing torsional rigidity of tension-torsion strip
一种降低拉扭条扭转刚度的方法
2023-11-24
Patent
Electronic Resource
Chinese
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