【摘要】 研究通过分析电力机车司机室的噪声来源及其特性 ,为改善司机室工作环境提供相关技术资料。以 8K型电力机车为例 ,结合现场测试 ,分析研究了列车在不同运行情况下司机室的主要噪声源及其噪声频谱特性 :常速下 ,呈低频特性 ;通过隧道时 ,频谱特性基本不变 ,但声级增加 ;鸣笛时明显表现风笛的中低频特性。更多还原

【Abstract】 The goal of the paper is to analyze noise sources and their properties of the cab of an electric locomotive so as to offer relative data which are necessary for improving the labor conditions. Exampling type 8K electric locomotive and combining with a field testing, this paper analyzed and researched the main noise sources and the noise characteristic of the cab under various conditions. At ordinary speeds, the noise assumes low-frequency characteristic; when the train is passing through a tunnel, except higher sound level, the characteristic is changeless; when the train is wailing, it shows a mid-low-frequency property of the air siren.更多还原