关键词: 疲劳耐久试验载荷谱；变速器台架；旋转雨流计数法；数据处理；损伤等效；仿真； 试验验证

Abstract: This paper discussed in detail the current situation of fatigue endurance test load spectrum of automotive transmission bench at home and abroad, introduced the rotating rain flow counting method and the damage equivalent theory, and on this basis, extracted the fatigue life test load spectrum from the original data of construction machinery shovel loading and driving conditions measured in the test field through gear segmentation, data processing and transformation. The load was used as the input of design life, and the design life of the transmission can be calculated and checked in the research and design stage. At the same time, the load spectrum was also used as the load spectrum of the bench fatigue endurance test to verify the fatigue test of the transmission prototype. It ensured the consistency between the load spectrum of design fatigue and the load spectrum of bench fatigue endurance test, and can also truly reflect the actual working load condition of the construction machinery.

Key words: Load spectrum of fatigue endurance test; Automotive transmission bench; Rotating rain flow counting method; Data processing; Damage equivalence; Simulation; Test verification