某型发动机附件机匣轴承衬套固定结构的改进

Improvement of Bearing Bush Fixture in Accessory Gearbox for a Typical Engine

分析了航空发动机附件机匣轴承衬套采用松螺纹固定的结构在高温时失效的原因。提出了过盈螺纹螺桩固定方案,通过理论分析及试验器试验,验证了改进措施的有效性和可靠性。

Failure of bearing bush fixture is investigated in accessory gearbox of aeroengine. An improved fixing stud with interference is used to fix the bearing bush. The results of theoretical analysis and rig testing show that efficen-cy and reliable improvement.