DG3型割灌机的噪声分析及其作业环境的评价

Noise Analysis and Assesment of Working Environment on DG3 Brush Cutter

该文对泰州林机厂生产的ＤＧ３型割灌机的噪声特性进行了实验分析研究。对割灌机操作者听力的安全性保护及对周围环境的影响也作出了分析与评价。结果表明，ＤＧ３割灌机噪声的支配性频率是０．３～６．０ｋＨｚ，特别是４．０ｋＨｚ附近是减噪的最主要对象。同时为了保护听力，必须控制每天的使用时间，在城市住宅区作业时，必须保持与住宅距离２００ｍ以上才能满足ＩＳＯ环境噪声允许标准，防止对居民生活的影响。

In this paper,noise characteristics of DG3-brush cutters,assessments ofworker’S hearing conservation and affects on the environment were investigated.The resultsindicate that the range of 300 to 6 000Hz was the governing frequency range,especially theband of 4 000Hz was the main target for noise control.Moreover,using the cutter duringcertain times of day must be controlled. While using the DG3-brush cutter near a cityresidential quarter, in order to prevent disturbances to residential life, a distance of longerthan 200 meters from the quarter must be kept while assessing with ISO criteria.