大型机动车驾驶室有害因素的分析

Analysis of Hazards in Driver’s Cab of Big Trucks

对不同吨位的大型货运机动车驾驶室内微小气候和空气质量进行了调查。结果表明，驾驶室内的气温比环境气温高３～６℃，湿度高３％～４％，气流速度高０．０６～０．１５ｍ／ｓ；噪声强度在８０～８６ｄＢ（Ａ）之间，噪声频谱分析显示属低频噪声；驾驶室内一氧化碳、二氧化碳浓度随着行驶时间延长而增加，二氧化氮浓度有随着吨位增加而增加的趋势。调查结果说明，机动车驾驶员工作环境中存在一些有害因素，为今后进行深入研究其对驾驶员健康的影响打下了基础。

n this study the microclimate and air quality in the driver’s cab of big trucks were investigated.The results showed that temperature,humidity and wind velocity in driver’s cab were 3～6℃,3%～4%,0.06～0.15 m/s higher separately than that in outside.The noise level was 80￣86 dB(A) and the main frequency was from 31.5 Hz to 125 Hz.Concentrations of CO and CO2 increased with duration of work.Concentration of NO2 increased with loading capacity of truck.The results indicated that there were some occupational hazards in the work environment of drivers.This investigation laid a foundation for further study.