| 摘要: |
| 针对GH2132材料托板螺母不同规格产品开展楔形螺纹的应用研究，研究了楔形螺纹结构对产品最小安装力矩、反复拆装振动、高低温交变处理环境相容性以及轴向载荷拉脱等性能的影响，找出了楔形螺纹产品安装力矩、预紧力、扭拉系数和振动松脱的关系。研究表明，GH2132材料托板螺母采用楔形螺纹结构的锁紧性能极高，耐反复拆装50次，在温度-196℃～100℃交变环境下松脱力矩不减，抗振动6万次，拉脱力值达到常规自锁产品的1.5倍。 |
| 关键词: 楔形螺纹 紧固件 防松 制造工艺 |
| DOI： |
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| 基金项目: |
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| Study on the Anti-loosening Performance of GH2132 Series Aerospace Wedge-thread Plate Nut Fasteners |
| YU Wei,LI Jian-gang,HUANG Shuai,LIU Ya-ting,YAN Lu,LI Lian-peng,LIN Wan-peng,YU Lei-lei |
| (Beijing Shouhang Science and Technology Development Company Ltd;Beijing Institute of Astronautical Systems Engineering) |
| Abstract: |
| In this paper, different specifications of GH2132-material plate nut products were studied for the application of wedge thread, so as to figure out the effect of wedge thread structure on minimal installation torque, repeated disassembly and vibration, compatibility to high and low temperature alternating environment and axial loading and pulling and other conditions, and to explore the relations between installation torque, pretightening force, twist coefficient and vibration and loosening. The results showed that the locking effect of GH2132 plate nuts was considerably improved due to the application of the wedge thread structure, and it tolerated to 50 cycles of assemblies and disassemblies. In the alternating temperature of -196℃~100℃, the looseningrequired torque was not reduced, and it tolerated to 60000 times of vibrations, and its pulling force value achieved 1.5 times that of conventional selflocking products. |
| Key words: Wedge thread Fastener Anti-loosening Manufacturing process |