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机械噪声是主要的工业噪声之一。有效地控制机械噪声,对于创造符合卫生标准的生产环境,实现对操作人员的劳动保护以及提高劳动生产率,具有很重要的意义。在噪声控制工程中通常采用:隔声罩对声源进行屏蔽;设置控制室隔离声源或在车间内部作大面积吸声处理等方法,对机械本身发出的(非管路的)噪声进行控制。隔声罩或控制室虽然具有很大的减噪效果,但是也有着很大的局限性。例如,体积十分庞大或具有防爆要求的机械设备、换气量较大而要求控制一定工作温度的机械设备、以及操作人员活动范围无法局限于控制室内的情况下,隔声罩和控制室的使用就会受到不同程度的影响,甚至无法实现。又如车间内部
Mechanical noise is one of the major industrial noise. Effectively controlling mechanical noise is very important for creating a hygienic production environment, realizing labor protection for operators and improving labor productivity. Noise control projects are usually used: the noise shield to shield the sound source; set the control room isolated sound source or in the workshop for large-area sound absorption process, etc., on the machine itself issued (non-pipeline) noise control . Although the noise enclosures or control room has a great noise reduction effect, but also has great limitations. For example, the mechanical equipment with very large volume or explosion-proof requirements, the mechanical equipment required to control a certain working temperature with a large amount of ventilation, and the operation scope of the operator can not be limited to the control room, the use of the noise enclosure and the control room Will be affected to varying degrees, or even impossible. Another example is the workshop interior