论文部分内容阅读
振动型设备对于材料传送十分有效,在工业中得到广泛应用.振动送料机在装配机和自动工作母机上用得很多,振动传送带则是另一个典型实例,冲压机零件和落料往往也是振动着的向下倾斜的滑槽收集的.振动传送设备的主要缺点是噪声级高达103～106dB(A).通过加装隔声罩对这类设备降噪并不合适,那样做不但费用大,而且维修和操作十分不便.本文对这类设备噪声发生的机理作了细仔的理论分析,提出了一系列降噪设计措施,并进行了试验验证,获得20～25dB(A)降噪量,结果证明这类设备在提高性能的同时,噪声指标达到L_(eQ)=80dB(A)是完全可能的.
Vibratory equipment is very efficient for material transfer and is widely used in industry. Vibratory feeders are widely used in assembly machines and automatic workstations. Vibratory conveyors are another example, and parts and blanking of punches tend to vibrate Of the tilt-down chute. The major drawback of vibration-transmitting equipment is noise levels as high as 103 to 106 dB (A). Noise reduction of such equipment by adding noise enclosures is not suitable, which is not only costly but also Maintenance and operation are very inconvenient.This paper makes a detailed analysis on the mechanism of noise generation in this kind of equipment, puts forward a series of noise reduction design measures, and has carried on the experiment verification, obtains the noise reduction amount of 20 ~ 25dB (A), the result Prove this kind of equipment while improving the performance, it is totally possible that the noise index reaches L_ (eQ) = 80dB (A).