隔振器在装载机驾驶室降噪中的应用  

Application of Vibration Isolator to Noise Reduction of Loader Cabs

作　　者：李洪忠[1] 郭春凤 张怀亭 

机构地区：[1]山东临沂师范学院工程学院,山东省临沂市成才路16号276005 [2]山东临工工程机械有限公司,山东省临沂市成才路16号276005

出　　处：《工程机械》2004年第9期20-22,共3页Construction Machinery and Equipment

摘　　要：在对某50型装载机驾驶室振动噪声进行试验分析的基础上,根据驾驶室振动特点,对原驾驶室隔振器进行改进设计,建立了由新的隔振器和驾驶室组成的振动系统的力学模型,以对耳旁噪声影响最大的频率处的降噪量为设计目标,确定了新隔振器的参数,使驾驶室内噪声降低了3～4dB(A).On the basis of test and analysis on cab vibration and noise of a 50 loader, improvement design is conducted on original vibration isolator according to the cab vibration characteristics. A mechanical model of the vibration system composed of the new isolator and cab is set up. Taking noise reduction of the frequency contributing at most to the ear noise level as design object, parameters of new vibration isolator are defined, which reduced the noise level of cab by 3~4dB(A).

关 键 词：驾驶室 隔振器 降噪 试验分析 振动噪声 振动系统 室内噪声 装载机 改进设计 力学模型 

分 类 号：TH243[机械工程—机械制造及自动化] U469.2[机械工程—车辆工程]