摘要
针对某型航空发动机中央传动从动锥齿轮振动应力超出齿轮许用应力的问题,介绍了一种应用于锥齿轮的螺旋环摩擦阻尼器。在齿轮轮缘内侧开一个凹槽,将螺旋阻尼环旋入凹槽中;工作时,齿轮轮缘和螺旋阻尼环因周向变形不协调而产生相互摩擦,从而消耗振动能量。将这种阻尼器应用于某型航空发动机锥齿轮减振方案中,试验结果表明,螺旋环阻尼器能够有效降低锥齿轮的振动应力水平;阻尼器安装前后该型锥齿轮的4节径1阶后行波共振应力降幅比高达70.7%,3节径1阶前行波共振应力降幅比为53.4%,减振后的齿轮振动应力水平低于齿轮的许用应力。此外,该型阻尼器还具有安装拆卸方便、附加不平衡量小等优点,在航空发动机齿轮减振中具有广阔的应用前景。
In view of the problem that the vibration stress of the axle driven bevel gear of an aeroengine exceeds the permissible stress,a spiral ring friction damper is designed for the bevel gear.In detail,a concave groove is fabricated on the inside rim of gear wheels,in which the designed spiral damping ring is embedded.The circumferential deformation of the spiral damping ring is inconsistent with the gear rim under working conditions;thus the mutual friction is induced and the vibration energy could be consumed.The designed spiral damper is applied to the vibration reduction scheme of an aeroengine bevel gear.The test results show that the spiral damping ring can effectively reduce the vibration stress level of the bevel gear.The vibration reduction efficiency of the first-order,4-pitch diameter backward traveling wave resonant vibration is about 70.7%,and that of the first-order,3-pitch diameter forward traveling wave resonant vibration is about 53.4%.Then the vibration stress level of the gear after vibration reduction satisfies the allowable stress.Moreover,the spiral damper enjoys convenience in installation and disassembly,and possesses small additional imbalance,which leads to a promising and broad application for vibration reduction of aeroengine gears.
作者
王艳丰
郜伟强
徐勇强
欧代松
Wang Yanfeng;Gao Weiqiang;Xu Yongqiang;Ou Daisong(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China)
出处
《机械传动》
北大核心
2023年第12期131-139,共9页
Journal of Mechanical Transmission
基金
国家自然科学基金项目(12072292)
四川省科技计划重点研发项目(2022YFG0083)
中国航发四川燃气涡轮研究院稳定支撑项目(GJCZ-0812-20)。
关键词
锥齿轮
螺旋环阻尼器
摩擦阻尼
减振
振动应力
Bevel gear
Spiral ring damper
Friction damping
Vibration reduction
Vibration stress
